Computer Randomly Restarts

[romuloxus]

Sorry if this is in the wrong place, but there is no help section.

I'm having a really big issue with my computer. It will restart randomly regardless of the load. I could be idle, browsing the internet, playing a game, it doesn't matter. Sometimes it boots windows before it restarts other times it restarts before loading windows. It even restarts in safe mode.

Things I've Tried:

-Turning off Restart Automatically After System Failure. I still don't get BSODs and no new error dumps since two days ago. For reference, the last error I got was a 0xa IRQL_NOT_LESS_THAN_OR_EQUAL_TO.

-Replacing every part in the computer except for the memory, but I ran it in a different system with no problems.

-Monitoring all temperatures, everything is running below 40c

-Flashing main bios with backup bios (Even restarted during that, had to do it twice)

-Running the computer outside of the case.

- Reinstalling windows 8

I'm seriously at my wits end here. I've searched around everywhere and no one seems to have the same problem as me as none of their solutions have worked.

Any help is appreciated.

My Build:
Motherboard: Gigabyte z87x-ud4h
Processor: Intel i5 4670k with standard cooler
Graphics Card: HIS 7950 IceQ Turbo
Memory: Crucial Ballistix 8GB (two sticks)
Samsung 840 PRO Series 128gb SSD
Western Digital 1TB HDD
Power Supply: Corsair AX 750W Gold

 

[ahnilated]

What is the voltage you are running the CPU at? It sounds like it might need to be bumped up a little bit.

 

[romuloxus]

CPU Vcore is set to 1.108v

 

[ahnilated]

Well you can try bumping it to 1.15 and see how it runs there (watch your CPU temps). The other issue could be the power supply is going out.

 

[romuloxus]

Okay I'll try that when I get back, also I don't think the psu is the issue as I've already replaced it once and switched psus with my friend. my psu worked fine in his computer

 

[ahnilated]

Usually when a CPU isn't getting enough power it will lock up, not randomly restart but being you have tried other stuff we have to start thinking outside the box.

 

[romuloxus]

Okay I tried changing the cpu voltage, but that didn't fix the problem. I went back to the bios to monitor the temp but it still shut down while sitting in the bios

 

[ahnilated]

have you run anything like memtest86 on this system just off the CD?

 

[romuloxus]

This computer is actually my friends and he said that he did, but I'll see if I can try it again to make sure

 

[ahnilated]

I would run it for at least 1 hr to see what you get.

 

[romuloxus]

Well i just realized I don't have a CD or usb to boot the memtest86 from. I figured i could use a partition on another HDD i have, but that doesn't seem to be working. I did read somewhere that faulty power cords can cause the issue of the computer restarting randomly, so I changed power cords, and the system is running fine now. I'm still not sure that its fixed though, because I've false fixes like this before. I'll just have to wait and see if that really was the problem.

 

[romuloxus]

Well changing power cables didn't work as the computer still restarts. Ill see if I can borrow someones flash drive and run that memtest though.

 

[ahnilated]

Can you see in the bios what the 12, 5 and 3.3 volt lines are at and let us know?

 

[romuloxus]

+3.3V: 3.344V
+5V: 5.010V
+12V: 12.240V

##UPDATE##

Also I've clocked the cpu down, it seems to restart less often if I turn the clock down. (3.00 GHz from 3.4 GHz)

##UPDATE 2##

It can run for a few hours without restarting but it will still happen at some point.

 

[romuloxus]

I tried putting the cpu back at the normal clock speed of 3.4ghz but it wont run at all if i have it at that clock speed.

 

[ahnilated]

I would reset your bios back to the defaults and see if it runs there before changing any other setting.

 

[romuloxus]

I would reset your bios back to the defaults and see if it runs there before changing any other setting.

Okay, I set the BIOS back to optimized defaults. It's now running at 3.4 GHz and it managed to boot windows. I'll let you know if it turns off again.

 

[romuloxus]

The computer was working for maybe 30 minutes, but it restarted and now it won't stay booted for more than a minute or two unless I turn the clock back down.

 

[ahnilated]

Did you ever run memtest86 for more than an hour?

 

[romuloxus]

I wasn't able to actually run it because I didn't have anything I could boot from other than my main SSD. But ill try and borrow a flash drive so i can do that.

 

[romuloxus]

Okay i found a flash drive to use and am currently running the memtest. Its been running for about an hour and thirty minutes by now (2 passes) with no errors, but ill probably let it finish up. I'm thinking of trying my roommates ram in this computer and putting mine in in his just to completely rule that out.

Before I started the memtest, I did switch my ram over to the two other slots and it ran much longer than normal @ 3.4GHz before shutting off. I'm thinking i just got lucky there.

 

[romuloxus]

The memtest ran for three + hours with no errors. I'm not really sure what it could be, is certain hardware just no compatible with each other?

 

[ahnilated]

That is true, some hardware just doesn't work right with other stuff. Usually companies put out updated bios to make those issues go away.

If you load into Windows now does the system run decently now? If you can run memtest86 for 3 hrs + lets see if you can be in windows for more than an hour without a crash.

 

[romuloxus]

During and after I ran the memtest it ran from 2:30 (The last time it restarted) yesterday until about 4am this morning. (When I went to sleep) And then when my friend used it this morning around 10 am it started restarting more frequently again. It just restarted a few seconds ago.

 

[ahnilated]

Well you are now getting into adjusting voltages and swapping out parts again.