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PC turns on, fans spin, but won't boot.

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  • Computers
  • Boot
  • Systems
Last response: in Systems
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May 16, 2014 11:13:11 AM

Hello,

I'm experiencing some pretty frustrating problems with my computer. We had a thunderstorm one night and I had left it on not thinking my computer wouldn't turn on in the morning. Nothing that I would do could make it turn on; I tried plugging it into the main line, alternate surge protectors, etc. This problem has been constant for several days now and I've finally run out of options.

Hardware:
NVIDIA GeForce GTX 660 Ti
Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz (4 CPUs), ~3.4GHz
16 GB RAM DDR3 RAM

I initially thought it was the power supply, a likely culprit in a powering issue. I purchased an EVGA 750B, a 750W power supply with more than enough juice to power my two harddrives and everything else in my computer. However, installing the power supply had no effect.

I then moved onto the motherboard, I purchased an ASROCK H87 Pro4 motherboard and have since installed it. The computer turns on, briefly, fans spin and then it simply turns off. The only sounds are from the fans starting to spin and shutting off.

So I'm at a loss for what to do here. Here's what I've done so far:
1. Ensured each connection is properly attached (motherboard power, CPU fan, video card seated firmly, RAM installed correctly, etc)
2. Reset the CMOS, just to be sure.
3. Tried an additional power supply to no avail.
4. Ensured that all stand-offs are aligned with screw holes and the motherboard is not touching anything besides the standoffs.
5. Tried turning the computer on with no sticks of RAM, and then each stick one at a time.
6. Cried deeply into my pillow.

None of these solutions have worked. So, here I am, practically begging for assistance with this. What do I do? I have no more ideas and each thread I read gives me more of the same things that have yet to work. Could it be a problem with my processor or graphics card?

More about : turns fans spin boot

May 16, 2014 11:15:39 AM

remove the gpu..

then use the onboard graphics to connect the monitor, then check if you can reach the bios.
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May 16, 2014 11:18:22 AM

Try taking out the GPU and using the integrated graphics.
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May 16, 2014 11:25:50 AM

I would say remove your GPU and use onboard to get into your BIOS. From there restore system defaults. And make sure you have your front power buttons positive and negative are in the right pins. This can actually cause alot of trouble if there in the wrong pins.
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May 16, 2014 11:34:51 AM

Hi

Have you tried all the tests here

http://www.tomshardware.co.uk/forum/261145-31-perform-s...

Try bread boarding first
Simplify :-
one ram dimm only , CPU, heat sink /fan screen to integrated graphics output
If no integrated graphics a old simple PCI or PCI-e graphics card that does not need extra power plus a psu obviously .

Plus kit for bread boarding =
Two Switches for Power + reset , two LEDs for power + hard disk activity + PC speaker /squeaker


Regards
Mike Barnes

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May 16, 2014 11:45:52 AM

No dice on any of those solutions. Computer tries to power on but something is cutting it short.

I did try all those tests, Mike. That page is favorited in my "PC Problems" folder. So I'm assuming we can rule out the graphics card as a problem.
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May 16, 2014 11:48:50 AM

If the GPU test doesn't work (using the onboard instead) then

BREADBOARD: Take wood plank or a cardboard box, unplug EVERYTHING from the case, then remove everything from the computer (you don't know what does or doesn't work at the present). Remove RAM, CPU everything.

Take mobo (removed from case) place on wood. Plug in CPU carefully, 1 RAM stick only, then PSU to the MOBO only, and the Power switch from the case. Then plug in GPU to onboard. Power on, does it get to BIOS (NEVER worry about Windows, we are looking at hardware, so the test is to get to BIOS). If not then ONE of these components is bad. As we replaced the PSU we know it isn't that.

Move RAM stick around different slots and retest, if still no joy, try the other RAM stick same test, if still no joy, then we need to determine which part is dead. Remove the RAM stick, does the Mobo Beep the error code with problem with RAM, if YES, then the Mobo is fine the RAM is dead. If no then is either Mobo or CPU,

Put RAM back in, remove CPU, does the Mobo beep error code for CPU issue? If No then the Mobo is dead, if yes, then the CPU is dead.
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!