help me out! pc doesn't turn on

[ebrucki98]

today i switched my cpu-cooler, wasn't a big deal but now my pc doesn't turn on:

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] here you can see what happens

I have tried booting without videocard, without storage, with only power plugged in, pretty much every combo you could think about

I hope you can help me :/ ...

my pc:

psu: corsair cx600

cpu: i3 530 (1156, H55)

ram: 8gigs corsair value select 1333

mainboard: Asrock H55M/USB3.0

SSD: OCZ petrol 128

graphics: sapphire: 6870 1gb

[Golfball_Pro]

You may either have a faulty PSU or Faulty RAM. Have you tried running on just one DIMM and seeing what happens?

If you have another power supply handy, you should try using that instead to make sure that it's not the PSU. Also, check and make sure that you don't have any faulty/bad cables and that they are all properly connected (check the CPU fan power as well).

[Puppet]

Some motherboards can be a bit fussy if the CPU fan isn't connected properly. I would double check that :)

[unidentical]

If you put the new CPU cooler on and it required a back plate, check to make sure nothing got in behind the motherboard tray, based on that video I wouldn't be surprised if something was shorting the traces, most likely on the RAM.

[target39]

Like unidentical said, you might have a short. Did you use a conductive thermal paste? If you did, check and make sure none of it got on the board. If some got on the board, take a lint-free cloth and clean up the area around the socket with isopropyl alcohol. MAKE SURE THE COMPUTER IS COMPLETELY TURNED OFF, DISCHARGED, AND UNPLUGGED. Read the cooler's manual and retrace your steps to see if you mounted the cooler properly.

[AJRicho]

As other of said it is likely you have shorted sonething and should double check. On the chance that everything it correct with the cooler check you didn't not the 4/8 pin cpu power as this will lead to no post if loose or no connected. Double check you placed the cpu fan power on the cpu fan header. Also reseat all you ram as it easy to knock. More so if it a big air cooler.

[nickpokesyou]

3 main point,

it might be, RAM, PSU, Motherboard,

try take take out 1 stick of ram, if still the same, try another stick,

if both same, try on other PSU,

if not, most likely to to be motherboard

[ebrucki98]

You may either have a faulty PSU or Faulty RAM. Have you tried running on just one DIMM and seeing what happens?

If you have another power supply handy, you should try using that instead to make sure that it's not the PSU. Also, check and make sure that you don't have any faulty/bad cables and that they are all properly connected (check the CPU fan power as well).

Did so, nothing....

[ebrucki98]

Some motherboards can be a bit fussy if the CPU fan isn't connected properly. I would double check that :)

i am pretty sure that it's plugged in correctly but shouldn't it also work without any cable plugged in? (passiv cooling?)

[ebrucki98]

If you put the new CPU cooler on and it required a back plate, check to make sure nothing got in behind the motherboard tray, based on that video I wouldn't be surprised if something was shorting the traces, most likely on the RAM.

no there is nothing... as i mentioned, sorry for the quality and i know that as i shot the vid everything was a bit messy..

[ebrucki98]

Like unidentical said, you might have a short. Did you use a conductive thermal paste? If you did, check and make sure none of it got on the board. If some got on the board, take a lint-free cloth and clean up the area around the socket with isopropyl alcohol. MAKE SURE THE COMPUTER IS COMPLETELY TURNED OFF, DISCHARGED, AND UNPLUGGED. Read the cooler's manual and retrace your steps to see if you mounted the cooler properly.

yes i used the conductive thermal paste which came with my cooler but there is nothing on my board...

[ebrucki98]

3 main point,

it might be, RAM, PSU, Motherboard,

try take take out 1 stick of ram, if still the same, try another stick,

if both same, try on other PSU,

if not, most likely to to be motherboard

have tried it with other psu/ram, so what can i do now?

[Asusmad]

Sorry to hear about your problem. To confirm your Pc booted in to windows correctly before the CPU cooler swapped out. Go back over your steps of ochanging it out especially if you had to take your mobo out.

[target39]

Like unidentical said, you might have a short. Did you use a conductive thermal paste? If you did, check and make sure none of it got on the board. If some got on the board, take a lint-free cloth and clean up the area around the socket with isopropyl alcohol. MAKE SURE THE COMPUTER IS COMPLETELY TURNED OFF, DISCHARGED, AND UNPLUGGED. Read the cooler's manual and retrace your steps to see if you mounted the cooler properly.

I know it may not look like there is anything on your board, but you'll be surprised when you find a small drop or smear of the paste on top of one of the traces. Maybe it even got one the socket. This is why you need to be careful when applying thermal paste. I would triple check the board and still clean any bare areas that don't appear to have any paste on them. As long as you use isopropyl alcohol, you should be fine. 70-100% isopropyl alcohol should be non-conductive. So, just remove the board from the case, remove all components including CPU, inspect socket for thermal paste, bent pins, etc. and replace cleaned CPU (no paste on IHS). Then, inspect board for any paste, if you spot one, clean it, but there may be more, so keep looking. If you can't find anymore, clean the board with some isopropyl alcohol throughout. Clean front and back with a lint free cloth.

[AJRicho]

Have you tried resetting you cmos/bios. May have crashed or glitched. I would say the extra power (4/8 pin power) for the cpu is out or not incorrectly or that the cooler is no pushing down on the cpu and is loose

[ebrucki98]

Have you tried resetting you cmos/bios. May have crashed or glitched. I would say the extra power (4/8 pin power) for the cpu is out or not incorrectly or that the cooler is no pushing down on the cpu and is loose

could you tell me how to do that with my "old" mobo? no 8 pin is in correctly, have tried with 2 different psus. I don't think it's loose. well.. i can hold the mobo on the cooler and there is no swiggle so i think its all okay

[ebrucki98]

Sorry to hear about your problem. To confirm your Pc booted in to windows correctly before the CPU cooler swapped out. Go back over your steps of ochanging it out especially if you had to take your mobo out.

yes, bootet correctly before the swap

well, 1) i grounded myself

2) i unplugged all powercables and other cables from the main board

3) i removed the stock cooler

4) HAD TO TAKE OUT MAINBOARD because cutout was to small for installing backplate

5 installed backplate

6 aplied firmal paste

7 installed the cooler itself

8 put everything back into the case

[ebrucki98]

Like unidentical said, you might have a short. Did you use a conductive thermal paste? If you did, check and make sure none of it got on the board. If some got on the board, take a lint-free cloth and clean up the area around the socket with isopropyl alcohol. MAKE SURE THE COMPUTER IS COMPLETELY TURNED OFF, DISCHARGED, AND UNPLUGGED. Read the cooler's manual and retrace your steps to see if you mounted the cooler properly.

okay, thank you for your help!

i have 2 more questions:

1) where do i get isopropyl alcohol from?

2) could you suggest any inconductive thermal-paste? I think of getting the noctua one...

[nickpokesyou]

3 main point,

it might be, RAM, PSU, Motherboard,

try take take out 1 stick of ram, if still the same, try another stick,

if both same, try on other PSU,

if not, most likely to to be motherboard

still happen the same thing? try unplug all the fan u have ( This Doesn't apply for CPU Fan)

if its the same, try unplug all the drives, if still the same,

its the motherboard,

do you do overclock on anything?

it might make it unstable too.

[target39]

Like unidentical said, you might have a short. Did you use a conductive thermal paste? If you did, check and make sure none of it got on the board. If some got on the board, take a lint-free cloth and clean up the area around the socket with isopropyl alcohol. MAKE SURE THE COMPUTER IS COMPLETELY TURNED OFF, DISCHARGED, AND UNPLUGGED. Read the cooler's manual and retrace your steps to see if you mounted the cooler properly.

You can get isopropyl alcohol from almost any store. Try a pharmaceutical store or just a regular grocery store. I am determined that your conductive thermal paste has caused this. For a non conductive thermal paste, I would suggest Arctic MX-2 or MX-4 if you can find it. Any thermal paste that is non conductive should be fine. Just make sure all of the conductive thermal paste has been cleaned off. This has happened to me before so just gently clean off the bare board with isopropyl alcohol, making sure you avoid spots where your cloth, or thermal paste residue could get stuck. I recommend using a lint free/microfiber cloth instead of paper towel, but if you're careful, the paper towel should be good enough as long as you clean off the thermal paste residue properly.

[Darell3]

Try to check if you scratched your motherboard at the back/front, if u see a scratch on the board that could be the problem.

[ebrucki98]

3 main point,

it might be, RAM, PSU, Motherboard,

try take take out 1 stick of ram, if still the same, try another stick,

if both same, try on other PSU,

if not, most likely to to be motherboard

all unplugged no oc

[AJRicho]

To reset the bios on this board you need to move the blue jumper on the pins to the other pins. it is located just above the the chassis fan 1 header label ed clcmos

[algoat]

Had the same thing when I installed a 3rd party cooler. Turns out the cooler screws weren't fastened tight enough so the CPU wasn't making good contact with the motherboard pins. In my case, the PC would turn on and the fans and leds would start, but it wouldnt post.

[mgsstar]

Something might be shorting it out and causing it to restart constantly. Have you make sure that your front panel io is inserted properly and nothing is touching them? If there is dust there then you should clean it.