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Computer Constantly Rebooting after BIOS.

post #1 of 3
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Hello,

I was playing a video in VLC player when the video suddenly froze and a loud sound was coming from the speakers. Reacting to this, I promptly did a hard reset on my computer. From then on, my computer will continue to reboot after posting BIOS. It will NOT go into the Windows 7 loading screen. I'm able to go into the BIOS, set boot order and all of that with it not restarting.

I have tried several things to try to troubleshoot this problem:

1) Take out all peripherals (including graphics card, USB stuff, HDD's, etc.)-- the result is that after bios, it will ask for a CD or HDD to boot from. Which I thought would eliminate the power supply and the motherboard from being the issue.

2) One memory module at a time (Kingston HyperX 1600 4x2GB) running 8 passes of Memtest--with no errors present. Tried also booting with one stick at a time--still restarting after BIOS.

3) Reformatting both my HDD and SSD and trying to use each together, then separately to boot windows--to no avail. Still restarting after BIOS posting.

4) Tried another power supply--it was significantly less than my 850W power supply, approximately 500 watts--but I took out my GTX 670 FTW to lower the wattage. It wouldn't even power on my system...lol.

** So I have no clue how to get past the BIOS and boot into windows. My initial guess is that when the video froze and the loud buzzing sound came from the speakers, it was caused by the video driver (GTX 670 FTW) crashing, or the CPU overheating too much. But my room is extremely cool with my air conditioner in, and I have had no previous problems with overheating yet.

--If my CPU did overheat and worst case, even die--the computer wouldn't even be able to post, am I wrong?

--It might be my power supply, but if it posts to BIOS, shouldn't it be okay?

--I can go into BIOS, and even boot from a windows 7 CD.


Any advice or suggestion would be greatly appreciated! Thank you.

Here are my specs:

Mobo: Gigabyte G77X-UD5H
Processor: i5 3570k
Ram: 2x4GB Kingston HyperX 1600mhz
PSU: Raidmax RX-850 80 plus Gold
GPU: Intel 4000 (on board) + GTX 670 FTW (card)
post #2 of 3
had the same problem and it turned out to be a harddrive issue. try (replace disk, replace cables, change ports)
You can check the health status of your CPU in BIOS by looking at the temps. anything below 40c is ok.
TheSadFlute
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DyingHeart
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TheSadFlute
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DyingHeart
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post #3 of 3
Quote:
Originally Posted by Xenon64 View Post

--If my CPU did overheat and worst case, even die--the computer wouldn't even be able to post, am I wrong?
--It might be my power supply, but if it posts to BIOS, shouldn't it be okay?
--I can go into BIOS, and even boot from a windows 7 CD.
Any advice or suggestion would be greatly appreciated! Thank you.

If a CPU overheats it almost always shuts down. if you leave it the time to cool off it will almost always start again with no damage; in the last few years CPU have gotten pretty good at saving their arse even if for any reason (fan failure, extreme ambient heat) it heats up. The one way you could have damaged the CPU would be to feed huge amounts of Vcore.

That said:
1.No, and you're right, it wouldn't POST
2.It's likely not the PSU; if you can go into BIOS check the voltages in the hardware monitoring section; if 12V is 12V the PSU is fine.
3.This is good info. Coupled with "3) Reformatting both my HDD and SSD and trying to use each together, then separately to boot windows--to no avail. Still restarting after BIOS posting." you should find the culprit. Either one of these things could be broken: motherboard, sata port(s), sata cable(s), HDD, SSD.

You could debug it like this:
*reset BIOS
*boot from a live linux - if you have at minimum a 1GB USB stick you could put a live Ubuntu - with the HDD/SSD removed if you can boot and use Ubuntu you're sure that the problem is somewhere on the SATA disks, controller or cables.
*then boot on linux, but with a HDD or SSD attached; change sata cables, change power cables, cycle motherboard sata ports until something works. If nothing does, then motherboard's SB is likely toasted. It's not that unusual since most boards use passive cooling which is rarely adequate and few users put a slow 80mm fan to cool the assembly.
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