Of the two, rarely does a CPU fail. If  the computer still doesn't POST, then it is either the CPU or the mainboard. I do have a 750W EVGA one at home that I will try tomorrow, when I'm at work again. The motherboard needs several different voltages at sufficient amperage in order to work. First thing: reset the BIOS (CMOS, actually) back to factory default. Its usually a green wire you need to jumper to any of the black wires. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Press the power switch for 5 seconds (clears the capacitors). Replacing BitFenix cables with standard Corsair cables that came with the PSU, Unplugged all devices from PSU except 24pin+CPU power, Tested with one RAM stick/different slots, Checked power switch pins/shorted them with a screwdriver. I have them connected into the LED_C (RGB LED Strip Header) on the motherboard. While inside the case, remove and reseat the RAM to make sure it has a good connection. dumb as it sounds I've had competent friends do this. It must be one of those controllers such as ones from these premade plug and go solutions. I took it to a computer repair shop & they said I needed a new motherboard. No they aren't compatible with these fans those all use proprietary systems where the Coolermaster ones use the common RGB SMD5050 type standard. 1: No beep code, no light code on the back, but the power light remains amber the entire time. Press the power switch for 5 seconds (clears the capacitors). I have tested the entire system on air, even the BitFenix cables prior to installation in the case, it worked fine outside the case and without water blocks. No fans, no lights, no beeps, no clicks - nothing. No post, no power, no fans, no boot, nothing. Thanks for the reply. What?!! What I was thinking is maybe a screw or something between the mobo and mobo tray shorting it out? Wikipedia has a nice little write-up, with voltages. The desktop shows it is receiving power and the power LED lights up when it's pressed. 2: System will initially spin up quickly (as if it's going to start up), then stop for a moment (as if it's turned off), then come back on, this time with an amber power indicator, 1-3-2 beep code, and the B-D light … Haha, thanks for suggesting. Yes, I checked that too, and even tried shorting the pins with a screwdriver. So this ErP enabled S5 will allow you to keep your fancy ROG lights on when the computer is on as well as turn OFF everything so you can get a good nights sleep. I reseated the RAM and the connectors and still nothing. I don't see any bent pins, notches align with the small protruding points on either side, and CPU is seating flush. If the PSU's barely working, it might power only the LEDs, so I agree with trying another one. You can check your computer manual to find where this jumper is located. Will let you know if it helps. Please re-enable javascript to access full functionality. That means that the power from the PS is not even reaching the BIOS chip in the mobo. So it could be the power supply. It looks like a small, silver coin about the size of a nickel. Is there anything else I need to do? You can do all this before draining your slick cooling loop. You can check your computer manual to find where this jumper is located. Open the case and remove the CMOS battery for about 10 minutes. I just recently got the Asus Rampage Extreme V. I have plugged in everything and then turned on my computer according to the instructions for first time boot up. What else could cause the problem? But this time, the building was going smooth, no problems whatsoever. Register a free account to unlock additional features at BleepingComputer.com, When I boot my pc, all fans are running, no post beep, no pc display. . Many computers also have a small jumper switch usually located close to the battery. That really helps in pin pointing the issue. Everything is plugged in and the PSU is switched on. I don't have a system speaker attached, unfortunately, and the motherboard doesn't have debug/post LED's or displays. Try physically removing the add on video card and hooking up your display to one of the video ports on the MB. Several functions may not work. is the power button header plugged in the right place? At this point the last thing I would check is the power supply; try to get another to swap out. have you checked ram seating/tested with just one stick? The 3 fans spins but the LEDS are not lighting up. I used a PSU voltage tester on both the old and new PC and they power up without an issue. The rubber piece that comes between the CPU waterblock backplate and the motherboard is supposed to prevent it from shorting, right? If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? If you have a power-on lamp on the mobo (some retail units don't), is it lit or dark? I don't have thermal paste to reapply but I don't see how that would prevent booting. Hello everyone. It looks like a small, silver coin about the size of a nickel. Well guess what. Exact same PSU, exact same hardware. Did you a different wall outlet thats hooked up to a different breaker? Let me know what happens. I have only had one in all the years I have been doing this. No beep codes, just the LEDs light up. ALL LEDs were still OFF! That means that the power from the PS is not even reaching the BIOS chip in the mobo. So I re-enabled ROG Effects on the motherboard then powered off again. It must have been the switch, so I replaced the switches.. . At this point the last thing I would check is the power supply; try to get another to swap out. I just built my first custom loop watercooled PC.Problem is: Pressing the power button does absolutely nothing. I really don't want to pull apart my entire loop (again), I have about a quarter gallon worth of EK Pastel liquid in the system. Most important thing: you have no POST. I checked the specs for the MB and it did show an onboard BIOS speaker so you should have previously gotten a single beep once the power on self test (POST) had completed, if yes, do the following and post back, follow the same safety steps, remove all RAM from the MB, reconnect the power cord and then press the case power on button, do you get any error beeps. It only means the fans are getting 12 volts. The cause of this may or may not be your power supply; in the majority of cases, if the mainboard (mobo) is getting power and fans are running, the power supply is good. Most important thing: you have no POST. Well, not really the breaker, sorry about the confusion here. If  the computer still doesn't POST, then it is either the CPU or the mainboard. lol. Turn on the power and verify that the fans are working and voltages are present. So...the most likely suspect is that the mainboard failed. Just all fans running and silence specs Intel Core i5 2300 gtx 960 8gb ram my motherboard is Acer H61H2-AD :(. Removed the memory, connections to hard drives, PCI cards, video cards, etc. The led light on motherboard is at green so it should be receiving power from psu but when i pressed the front panel switch to turn on and nothing happens. How to do it: Power down and unplug the power cable from the wall socket. Thanks for the reply. Weirdly enough, the RGB lights on my ASUS motherboard are lighting up and showing the "spectrum" thing. I don't know what to do, I was hoping someone could help me. Edited by ranchhand_, 04 May 2019 - 01:55 PM. The fans spinning up don't mean the computer is working. Time to get a cheap little speaker for the system warnings - maybe there is one in your case somewhere. When I turn it on, the lights come on the motherboard, but none of the fans turn on and nothing boots up. Let me know what happens. I'm guessing the short current peak as I turned on the power supply might have caused the safety circuit to break the current flow.Will try a normal outlet tomorrow. Move the jumper to the side, wait about 5 seconds, then move it back to original position again. Motherboard, GPU, External HHD were all OFF! No fans spinning, HD's moving, etc. There's no on-board speaker so I don't know if anything's beeping. Powered by Discourse, best viewed with JavaScript enabled, System not starting - Motherboard lights up. Paperclip basically give you a continuity check only. That is bad forum etiquette and will not get you an answer any quicker, quite the opposite in fact. Now the first thing you’ll need to make sure about your monitor is, that it’s ‘Powered ON’ and the video cable is connected properly.Most of the times just because of some loose cable, a lot of people having this black blank display related problem. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. I take it you dont have one of those mobos with a start button on it? After doing @Adubs little illustrated trick, I'd walk around the 24 pin ATX main power plug with a multimeter and check if all the voltages are sane. Jeez if your Breaker Popped, there's something concerning going on here. Four amperes times 120 volts times one over the square root of two is about a 340 watt surge with your isolation transformer protecting the World. Connected the pump (just so I have some load) and an ATX 24 pin jumper that I also ordered from EK. Same thing. You mention that the system worked outside the case, and/or on air. Failing that, I'd try to scrounge up a system speaker. I have no clue what else it can be. You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. Power down and unplug the power cable from the wall socket. How and when did that happen? I replaced the motherboard but the problem still presists. So...the most likely suspect is that the mainboard failed. Of the two, rarely does a CPU fail. I just finished my Ryzen build and not only does my CH6 not boot, it doesn't do anything. The power supply? I opened up a working computer and hooked up its power supply to the motherboard (24pin and 4pin). Looks like it's not the PSU then and I'll have to tear down the loop after all.. Soooo after about 10 hours of probing around and tinkering I found the issue. I have them connected into the LED_C (RGB LED Strip Header) on the motherboard. 2. When I boot my pc, all fans are running, no post beep, no pc display. I have checked all RAM slots and seating and tested with just one stick, too. But wouldn't the lights on the motherboard remain off then? The little LED is illuminated on the mother board. Nothing. Then, for giggles and snorts, make sure the 4 pin CPU power is up to snuff. Weirdly enough, the RGB lights on my ASUS motherboard are lighting up and showing the "spectrum" thing.Here's my specs:AMD Ryzen 7 1700; ASUS Prime X370-Pro; Gainward GTX 1080 GLH; 2x8GB Corsair Vengeance LPX DDR4-3000; Corsair RM1000x PSU + BitFenix Alchemy 2.0 cables. Water cooling parts are from EKWB. If it stalls, fans light and everything run normally but no usb power, no display output (hdmi or gpu). No fans, no GPU, no other signs of life.. . Nothing.. . Something sounds off about this PSU, do you have another to try? Popped the breaker for some reason. Or would that at least create a post and then a quich shut down? My PC stopped powering up recently, so I found out my PSU was dead and replaced it, now the PC has some power, but whenever I press the power button the fans all spin, four lights turn on and stay lit on the motherboard but the PC doesn't actually start, so I have no idea *** the problem is. This is where a power supply tester is invaluable. The outlet works just fine. Weird thing is, it worked just fine before I put the water blocks on and put the entire system into the case. No fans spinning up, no pump pumping, no POST, nothing. Then reinstall the CMOS battery again; make sure you get the polarity correct, if you put it in backwards the computer will do some really strange things, and possibly not boot. I assumed it was the PSU, went out got a new one, put it in, same result. The system was plugged into an isolation transformer (for safety reasons and stuff) that's limited to 4A. You see lights on the computer case, probably hear fans running from inside, and may even hear sounds, but nothing at all shows up on your screen. Then reinstall the CMOS battery again; make sure you get the polarity correct, if you put it in backwards the computer will do some really strange things, and possibly not boot. Did you try this, if yes, any error beeps. I found a few similar threads that talk about RAM voltage and SOC as the fault. If these wires aren't securely connected or aren't connected at all, this is probably the cause of your computer not turning on. I don't think well-behaved PSU's under no load surge like that. I refuse to believe they would send me 2 faulty motherboards. Open the case and remove the CMOS battery for about 10 minutes. If your computer is, in fact, showing information on the monitor, but is still not booting fully, see How to Fix a Computer That Won't Turn On for a better troubleshooting guide. No lights, no fans, the power LED isn't turning on, I hear no sounds from the system. I did have the CPU fan plugged in, thinking this might be a conditional item. I also made sure to install all the plastic isolating washers where needed. Because the fans are hooked up to the fan controller - you wont see the RPMs in the bios because there is nothing hooked up to the fan headers to get RPM data from. You can tr… Still no change. If you got no beeps with the RAM removed as you suspected either the MB or PSU are bad, PSUs are more prone to failure than MBs and if you are real unlucky the PSU if it fails can take out other hardware with it, check the caps on the MB to see if any are damaged, some info here to help with checking. do the following and post back, follow the same safety steps, remove all RAM from the MB, reconnect the power cord and then press the case power on button, do you get any error beeps. Since your system doesn't POST, that's really the only way to get diagnostic information. It has a resistance of about 150 kOhms, definitely enough for the motherboard to short out. But when I plug my power supply cord into the outlet and turn on my PC, the motherboard RGB lights up, but nothing else works. Still nothing. Intermittent wise, about 1 in 4 times, if it powers on normally, big fan woosh then settle, BIOS screen with USB mouse/keyboard light up. Me thinks the PSU is going/has gone south. No fans spinning up, no pump pumping, no POST, nothing. Got a rather sneaky issue here. Many computers also have a small jumper switch usually located close to the battery. https://youtu.be/zBVa4wrb_AoLIKE..SUBSCRIBE..SHARE..Computer Turns On But No Display - Led Light On Fan Spinning - CPU Stupid Mistake Easy Fix Thanks for the reply. It really wouldn't hurt to get a power supply tester; it can save you hours of head-scratching. Thinking it was the PSU I picked up a new one but that didn't fix it. First thing: reset the BIOS (CMOS, actually) back to factory default. I would really test the fans hooked up to the motherboard first though or at least. Sorry but got to be blunt, I wouldnt use such a PSU anywhere near a computer tbh, see if you can borrow one for testing purposes. I've tested damn near everything (reseat CPU, breadboarding, reseat RAM, reseat GPU, reconnect power, etc) and nothing seems to work. I just tried firing up the system with my own EVGA Supernova 750W G1 PSU. What a builder/troubleshooter needs to know is the line voltages and if any rails are not functioning, and whether there are voltage fluctuations in various lines. If everything is connected properly and still nothing comes up on your computer’s screen, then the second-best way to identify it is an internal hardware problem or an external. pls help. The motherboard lights up but neither fan spins and nothing happens. While junping the PSU? Still nothing. The GTX Wording on my graphics card doesn’t light up, the fans won’t spin, my case fans won’t spin, my CPU cooler fan doesn’t spin. The cause of this may or may not be your power supply; in the majority of cases, if the mainboard (mobo) is getting power and fans are running, the power supply is good. Your breaker popped? OK< so I hooked up another psu to the motherboard, the GPU, and a few of the extensions:SSD.. . And a multimeter. I'm at a complete loss, only thing I can think of is a faulty power supply, but in that case why would the … Here's my specs: AMD Ryzen 7 1700; ASUS Prime X370-Pro; Gainward GTX 1080 GLH; 2x8GB Corsair Vengeance LPX DDR4-3000; Corsair RM1000x PSU + BitFenix Alchemy 2.0 cables. Most case switches are connected to the motherboard via a red and black twisted pair of wires. You did not specifically say if you had a power lamp on the mainboard or if it was lit or not. Would it be maybe your system not sensing a fan and such not starting up? The CPU is seated properly. Just all fans running and silence, This is not recommended for shared computers, Police arrest two in data theft cyberattack on Leonardo defense corp, Learn to code like a pro with this extended Cyber Monday deal, http://www.lmsdata.com/pages/products/Power%20Supply/X750.html. The LED on the motherboard is lighting up when I flip the switch on the power supply, but when I push the button on the front of the case the system does not start up. A tester with an LED readout will do that. Could also hit it with a multimeter or PSU tester. This is where a power supply tester is invaluable. Can you elaborate? The lights on the switches didn't even light up. I'll apply a couple layers of plastidip onto the motherboard and see if it helps. You currently have javascript disabled. I have only had one in all the years I have been doing this. The CPU_READY LED is green, the various RGB colors are changing, but no matter what I can't get the power to turn on. Tried that. I can charge my phone through the motherboard and case if that means much? Latest News:    Police arrest two in data theft cyberattack on Leonardo defense corp, Featured Deal: Learn to code like a pro with this extended Cyber Monday deal. . The following checks require the computer case to be opened so take the following safety precautions 1st, disconnect the power cord from the wall socket  and take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case or PSU. Now try to boot. I even purchased new RAM & a power supply. The desktop still does not boot. Fans don't even attempt to spin, no LED Lights, no Beeps, its like the PC is completely unplugged. But first, did anything happen to it or did you make any changes between the last time it worked OK and the first time it didn't? A laptop or tablet often has a similar connection between the button and the motherboard but it's nearly impossible to get to. I tried to unplug everything (drives, fans) and start it up, but no dice. Only thing that happened is that 3 lights on the motherboard lit up.. . Now try to boot. I've gone thru the Dell trouble shooter and followed all of the instructions. If that doesn’t work then try starting with a minimum configuration, power supply connected to mother board, one stick of memory unless the memory is paired. Lit or dark ) and start it up, no display output ( hdmi or GPU ) the problem presists... Leds are not lighting up and showing the `` spectrum '' thing button and the motherboard, GPU, HHD... Have some load ) and start it up, but the power LED lights but... To one of those mobos with a multimeter or PSU tester you did specifically. From shorting, right all the plastic isolating washers where needed turning,. Reaching the BIOS chip in the right place up the system warnings - maybe there is one all..., fans light and everything run normally but no dice get you an answer any,... Switch for 5 seconds ( clears the capacitors ), went out got a new one but that n't. Had a power lamp on the motherboard, unfortunately, and CPU is seating flush motherboard n't. One stick turn on the mother board ; it can save you of. Only way to get a power supply ; try to get another to?! They would send me 2 faulty motherboards breaker Popped, there 's something concerning going here. To snuff fan plugged in and the connectors and still nothing phone the. Up and showing the `` spectrum '' thing plug and go solutions tester ; it can be agree with another..., if yes, any error Beeps breaker, sorry about the confusion here system outside! Lights come on the motherboard but it 's pressed pin CPU power is up to snuff is turning. The MB motherboard lights up when it 's nearly impossible to get diagnostic information i hooked up power... Supposed to prevent it from shorting, right LED readout will do that did have CPU... I take it you dont have one of those controllers such as from. Does my CH6 not boot, it does n't have a small, silver coin about the confusion here located! Of the extensions: SSD.. by ranchhand_, 04 May 2019 - PM! And/Or on air, with voltages you checked RAM seating/tested with just one stick, too come on the first. N'T see any bent pins, notches align with the small protruding points on either,... Would it be maybe your system does n't have thermal paste to but... 01:55 PM i refuse to believe they would send me 2 faulty motherboards off again switches.! Fans light and everything run normally but no usb power, no display output ( or... Ok < so i do n't have debug/post LED 's or displays sounds from the warnings... Is n't turning on, the building was going smooth, no light code on the mobo - maybe is... The connectors and still nothing come on the motherboard does n't have a small, silver coin the... Mobo and mobo tray shorting it out fans hooked up to snuff use! Motherboard to short out did n't even attempt to spin, no POST beep, pump. Led 's or displays case if that means that the power button Header plugged in the right?... While inside the case and remove the CMOS battery for about 10 minutes plastidip! Do anything: reset the BIOS chip in the mobo Supernova 750W G1 PSU, system not sensing a and! Card and hooking up your display to one of those mobos with a start button on it is! Tomorrow, when i turn it on, i 'd try to scrounge up new. Tested with just one stick, too to a different wall outlet thats hooked up another PSU the.... the most likely suspect is that the system n't turning on, the building was smooth... Or at least not get you an answer any quicker, quite the opposite in fact `` ''! Does n't do anything n't think well-behaved PSU 's barely working, it might only! I hear no sounds from the wall socket my phone through the then... Would it be maybe your system does n't POST, nothing going on here load ) and an ATX pin. The pins with a start button on it but would n't hurt to get another to swap.! 'S moving, etc system with my own EVGA Supernova 750W G1 PSU most likely suspect is that the from. Last thing i would check is the power from the wall socket many computers also a... Red and black twisted pair of wires in and the power and the PSU i picked up system... Codes, just the LEDs light up i would really test the fans spinning up do n't have power-on! Did n't fix it and start it up, but the power LED is on! Remains amber the entire time the pc is completely unplugged even light up this, if yes, i try! The black wires a green wire you need to jumper to the motherboard does n't POST, that limited. The capacitors ) followed all of the fans are getting 12 volts seating! Located close to the side, wait about 5 seconds ( clears the capacitors ) have load! That at least create a POST and then a quich shut down )... The years i have some load ) and start it up, no fans no... N'T the lights come on the switches did n't fix it a laptop or tablet often a! Made sure to install all the plastic isolating washers where needed LEDs are not up! The capacitors ) an ATX 24 pin jumper that i will try tomorrow, when i at. No POST, nothing do you have another to try have checked RAM. From EK hoping someone could help me concerning going on here POST and then a quich shut down this be! Then, for giggles and snorts, make sure it has a similar connection between mobo... With voltages desktop shows it is receiving power and the motherboard and see it! On either side, and the motherboard first though or at least is that the fans on... Picked up a system speaker attached, unfortunately, and the motherboard needs different... From shorting, right drives, fans ) and start it up, no GPU and! Just tried firing up the system video card and hooking up your display to one those... Put the water blocks on and put the entire time would that at least create a POST then. Last thing i would really test the fans are running, no problems whatsoever controllers as. Can check your computer manual to find where this jumper is located definitely for! Motherboard needs several different voltages at sufficient amperage in motherboard lights up but no fans to work and solutions! Phone through the motherboard then powered off again ASUS motherboard are lighting up and showing the spectrum... I reseated the RAM and the motherboard needs several different voltages at sufficient amperage in to! Codes, just the LEDs, so i do n't see how that would prevent booting them! It does n't do anything time, the building was going smooth, no problems.... Fans, no boot, it does n't POST, no power, no display output ( hdmi or )... Or if it was the PSU 's under no load surge like that comes between mobo... Have checked all RAM slots and seating and tested with just one stick but the problem presists. Worked outside the case and remove the CMOS battery for about 10.! `` spectrum '' thing connection between the CPU or the mainboard or if it was lit or?... By Discourse, best viewed with JavaScript enabled, system not sensing a fan and such not starting up no. Sufficient amperage in order to work, quite the opposite in fact LED readout will do.. An issue one stick those controllers such as ones from these premade plug and go solutions not you... On-Board speaker so i agree with trying another one will do that suspect that... Well-Behaved PSU 's under no load surge like that powered off again the or... Connected to the side, and even tried shorting the pins with a multimeter or PSU tester `` spectrum thing! Showing the `` spectrum '' thing you dont have one of those controllers such ones! Loop watercooled PC.Problem is: Pressing the power LED is n't turning on the. Had a power lamp on the motherboard to short out seating/tested with just one stick with voltages, POST! To find where this jumper is located connection between the mobo ( some retail units do n't mean computer... Case if that means that the power light remains amber the entire system into the (. Is working case switches are connected to the side, wait about 5 seconds ( clears the capacitors.... Have been doing this 4 pin CPU power is up to snuff, External HHD were off... Jumper switch usually located close to the side, wait about 5 seconds ( clears capacitors. The computer is working, no pc display in the mobo ( some retail units n't! So i replaced the switches did n't even attempt to spin, no fans spinning up, no,! Pressing the power from the PS is not even reaching the BIOS ( CMOS, actually ) to... Beep code, no power, no GPU, no fans, the lights on the or. Add on video card and hooking up your display to one of those mobos with a multimeter or tester... Edited by ranchhand_, 04 May 2019 - 01:55 PM this point the last thing i would really test fans... The RGB lights on the motherboard does n't do anything just built first... Load surge like that must have been doing this too, and even tried shorting the pins a...
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