PC shutting down during POST

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V

Verar

Honorable
Dec 28, 2013
23
0
10,510
About a week ago, I turned my computer off after it worked perfectly fine, then the next day, I tried to start it back up, and during POST, it shut off.

So I got myself a speaker for the motherboard to see if it would give me a beep code. Certain boots it'll give me a beep code, some it will shut down before it gets all the way through POST. Other times, it'll get through and come up with a screen saying CPU Fan Error - Press F1 for Setup, so I press F1 for setup, it goes into the BIOS and then shuts off again.

Then if I try to turn it on again, it'll shut down about 6 seconds into POST, or it'll give me a beep code while failing on the Boot drive. The beep code is 1 long, and 4 short beeps. Then it'll shut down.

Here's everything I've tried so far.

I've replaced the motherboard.
I've tried a different PSU
I took the CPU out of the build I have and tried it in a different PC, it booted just fine.
I've taken out the RAM, and received a different Beep code indicating that it's not there.
I've unplugged my SSD and HDD and left in a USB with windows 10 install on it, still no boot.

My current specs are
ASUS 970 PRO GAMING/AURA AMD AM3+ FX DDR3 ATX Motherboard
Gigabyte GTX 970
G.SKILL Ripjaws Series 8GB DDR3 RAM
SeaSonic 750W Power Supply X750 Gold
AMD Fx-8320 CPU

Any help on this would be greatly appreciated. I'm at my witt's end with this, and I'd hate to keep replacing parts to not figure out the issue.
 
Solution
RaDiKaL_
Usually the POST follows this procedure:

-Tests the CPU.
-Tests the RAM modules.
-Tests the GPU.

Since you got a different code when taking out the RAM, it seems your system is getting up there, so mobo and CPU should be fine.

This leaves us with your RAM modules or if they've been checked successfully your GPU.

Either test your RAM modules in another pc or find out what that 1 long 4 short beep codes mean, I want to say they point out a GPU issue but I'm not completely sure.

If it happens to be the GPU, try reseating it in your mobo and make sure all his PCI-E power connectors are correctly connected to it.
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RaDiKaL_

RaDiKaL_

Splendid
Apr 17, 2006
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Usually the POST follows this procedure:

-Tests the CPU.
-Tests the RAM modules.
-Tests the GPU.

Since you got a different code when taking out the RAM, it seems your system is getting up there, so mobo and CPU should be fine.

This leaves us with your RAM modules or if they've been checked successfully your GPU.

Either test your RAM modules in another pc or find out what that 1 long 4 short beep codes mean, I want to say they point out a GPU issue but I'm not completely sure.

If it happens to be the GPU, try reseating it in your mobo and make sure all his PCI-E power connectors are correctly connected to it.
 
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Solution
V

Verar

Honorable
Dec 28, 2013
23
0
10,510


Can't get into the BIOS, so I can't check. The fans seem to be spinning up normally though.

 
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V

Verar

Honorable
Dec 28, 2013
23
0
10,510


I'll try the GPU and RAM in another PC build to see if either of those are the issue.

 
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photonboy

photonboy

Titan
Jun 20, 2006
21,567
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85,015
At this point I would start HERE:

1. Borrow any video card you know works. (there's a latch on the motherboard that can break BTW so watch out for that.)

2. Unhook all HDD/SSD. Should have one stick of RAM, CPU cooler, and keyboard or mouse (if boot still fails use mouse instead of keyboard)

3. boot to DVD or USB stick with memtest86 on it www.memtest86.com (confirm it works in a different PC)

Other:
Double check power connector to main 24-pin, CPU, and GPU if it needs power.
 
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V

Verar

Honorable
Dec 28, 2013
23
0
10,510


I've now tried almost every part in my build in another build and everything works fine. The RAM works fine (both sticks), the GPU works fine in another build. The CPU works fine in another build, and the I've used a different power supply to boot up the PC, the problem still persists.

The only thing left to try now is a different CPU cooler. I currently use the H100i.

However, I don't know for sure, but I don't think the h100i would stop the computer from booting even to BIOS. It should let me access the BIOS even if it's not working properly. The fans spin up fine when I power on the computer. I've also tried booting to a USB. Not with memtest86, but with windows install. I can't reach the BIOS to boot from USB though, so I'm not sure I'll be able to boot to a USB for memtest.

I'm going to try to use an old CPU fan/heatsink I have laying around, to see if it's truly the h100i. If it's not that, there's nothing left to test.
 
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V

Verar

Honorable
Dec 28, 2013
23
0
10,510
The issue seems to be caused by the H100i V2 water cooler. Not sure what the problem with it is, but it's not allowing the PC to boot. Works just fine with a standard CPU fan attached. Oh well, time to buy a new one I guess. Since I doubt I can fix it.
 
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