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Computer keeps restarting when trying to boot. RAM passed memtest.

Last response: in Motherboards
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May 30, 2014 4:14:27 PM

Background Info (Events leading up to failure):

Specs of computer:

Motherboard: ASRock z77 Fatal1ty (second hand)
CPU: Intel i5 3570k
GPU: Sapphire Radeon HD 7850 2gb
PSU: Seasonic S12 620W
OS: Windows 7
Internal Hard Drive: Western Digital Caviar Black 1 TB
RAM: Gskills Ares 8gb

I've recently been having a lot of problems with my computer. I built it myself when I first got it, everything was new except the motherboard (which was in good condition at the time). I used if for a little less than a year before I encountered any probelms.

First came some subtle freezes, which I just thought came naturally with age. But then I started getting crashes. Lots of them. I would get BSOD (blue screens of death) as frequently as every 2 days. There would be times when it would be unable to boot windows and I had to run startup repair to get it to boot again. It seemed to work fine for a period, but when it got worse I decided to format my drive and do a fresh install of windows as I thought corrupt drivers or boot files were the cause.

After the fresh installs it would work fine for maybe 1-2weeks before the problems came back (BSODs, needing to constantly run startup repair to get it to boot). I've formatted about three times now and the same thing happens. I then thought it may be due to a faulty hard drive or RAM or maybe my motherboard.

Problem:

Everytime I start my computer, at the part where there is a windows logo forming on a black background it will suddenly restart after about 15 seconds.

When I try to boot in safe mode it gets stuck whilst loading one of the drivers and restarts as well.

When I try to run startup repair it proceeds to the part where there is a loading bar with green tiles moving across then just turns black, sometimes with a visible mouse and sometimes without.

Things I've tried:

I ran memtest on it and it had 15 passes and produced no errors.

I tried to start my hard drive in another computer, the exact same problem occurs (except with slightly different timings for the restarts)

I ran a good hard drive in my current 'bad' setup and it produced the same problem (also with slightly different timings).

I'm starting to think I have a faulty mobo and a faulty hard drive.

Can anyone else provide me with some insight and/or fix for my situation?
a b V Motherboard
May 30, 2014 4:19:36 PM

What were the BSOD codes?
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a c 235 V Motherboard
a b $ Windows 7
May 30, 2014 4:27:16 PM

If now it won't run, then you can't get the info from the DUMP file in c:\?

If it runs, dowload and run HWInfo - Sensors and post the results - 3 screenshots on TinyPic or similar.

If it doesn't run, then go through Tom's checklist - http://www.tomshardware.com/forum/261145-31-perform-ste...

You can also download using another pc and run Memtest off a usb without the OS running.

If that doesn't help then you need to start swapping out components.

You psu should be OK. Maybe a new mobo.
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May 30, 2014 4:38:48 PM

I can't access windows as it keeps restarting. And unfortunately, I've lost all the information about the BSOD.
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May 30, 2014 4:48:26 PM

A BSOD appears during windows startup when I disable automatic restarts. It reads:

STOP: 0x000000ED (0xFFFFFA80079538A0, 0xFFFFFFFC00000B5, 0x0000000000000000, 0x0000000000000000)

This is all the info I have atm.
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a c 235 V Motherboard
a b $ Windows 7
May 30, 2014 6:15:14 PM

You can most likely fix it by using System Restore:
1. Keep tapping F8 during the early boot phase.
2. Select Repair from the menu.
3. Enter the Administrator's password when prompted. It is often blank.
4. Select System Restore when prompted.
5. Set Windows back to a point before this problem occurred.
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May 30, 2014 6:46:12 PM

When I do that it says windows is loading files, then it goes to the loading bar with green tiles and then the screen just stays black. I can leave it for hours and nothing will happen.
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a c 1649 V Motherboard
a b $ Windows 7
May 30, 2014 6:49:31 PM

Have you tried w/ a single stick?
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a c 235 V Motherboard
a b $ Windows 7
May 30, 2014 6:51:59 PM

If it doesn't run, then go through Tom's checklist - http://www.tomshardware.com/forum/261145-31-perform-ste...

You can also download using another pc and run Memtest off a usb without the OS running.

If that doesn't help then you need to start swapping out components.

You psu should be OK. Maybe a new mobo.
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May 30, 2014 7:14:57 PM

I was getting BSOD all the time. I did a memtest and it said it was fine. Well I kept getting BSOD so I downloaded Microsofts x64 debugging tool and downloaded the symbols with it. I got another BSOD and used the debugging tool and lo-and-behold, it said I had corrupted memory. I had 2 sticks of RAM, so I took one out and haven't had a BSOD since.

I've learned from experience that the Memtest doesn't work for me. It may have worked for some of you but it didn't for me.

If you have 2 sticks of RAM, my advice is to take a stick out for a while and see if you get Blue screens. If you do, take out the other. It's worth a try.
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