Solved Windows 7 randomly restarts itself while playing game

[nolimit87]

The random restart first happened 3 weeks ago. I was playing game when it happened. The computer suddenly restarted itself but I have no idea why and I chose to ignore since it didn't happen anymore on that day. Then after more or less a week, the same thing happened again.

Same as the first one. It restarted the Windows once and it didn't happen anymore on that same day. So I couldn't really track what is wrong. Then after that, it started happening more and more often until I lost count of how many times the Windows have restarted itself.

I used to run Windows 10 Pro and due to the random restart, I reinstalled Windows 7. Hoping it would fix the issue but it doesn't.

Here is my computer specs:
Windows 7 Pro 64 bit 8GM RAM
Intel i5 4590 CPU 3.30GHz
GeForce GTX 750 Ti
Corsair VS550

I would really really appreciate it if anyone could help me.

 

[Pauly]

Check your temperatures while idle and while gaming sounds like they could be going to high
If needs be try stress testing your cpu (prime95)and/or gpu (furmark)

 

[nolimit87]

Attached pics

temp: IDLE
temp2: GAMING

 

[Layback Bear]

Wow those are sure some low voltages. I don't even know how the computer runs at all.

What power supply are you using?

 

[nolimit87]

I am using Corsair VS550 PSU.

 

[Mellon Head]

I would borrow another PSU and swap it out and see if it improves the restart issue, or even if those detected voltages come up a bit. As Layback Bear said, I don't know how it even runs at those voltages.

If those voltage readings are correct, your power supply is failing.

 

[nolimit87]

This is the Voltage readings from BIOS.

 

[Mellon Head]

Well, that certainly seems healthy. I wonder why HWMonitor is reading the voltages that low?

Assuming that there isn't a problem with the power supply, I wonder if you have a memory problem? You could try testing the memory with Memtest86+. Let it run overnight for about 8 passes if the machine can run that long without restarting.

Memtest86+ - Advanced Memory Diagnostic Tool

What make and model of RAM do you have?

 

[nolimit87]

Unfortunately, I am not sure how accurate HWMonitor reading is either. I will be doing the memtest tonight and report back ASAP.

I'm using Corsair Vengeance Pro Series — 8GB (2 x 4GB) DDR3 DRAM 1600MHz C9 Memory Kit (CMY8GX3M2A1600C9).

The PC that I am currently using is a 5-month-old PC so it was running the game fine until the restart problem happened.
First time - Sep 12 (rebooted once)
Second time - Sep 20 (rebooted once)
Third time and so on - Sept 25 and it has been happening everyday since then. It rebooted so many times (maybe like 5-7 times a day or could be more if I keep logging back into game).

Mostly happens when I'm in game and it seems quite safe if I'm not in game. Sometimes it rebooted after 10 mins (in game), other times it rebooted after 1 hour or so. It has no specific pattern, very random.

I'll state more detailed PC specs in case it helps to identify the problem:
OS: Windows 7 Pro 64 bit
CPU: Intel i5 4590 3.30GHz
GPU: Asus NVIDIA GeForce GTX 750 Ti OC
MOBO: Gigabyte B85M-DS3H-A
RAM: 8GB (2x4GB) Corsair Vengeance Pro Series CMY8GX3M2A1600C9
PSU: Corsair VS550

 

[nolimit87]

Memtest 8 passes 0 errors done for the first card. Gonna try the second one tonight.

 

[Pauly]

I would investigate the GPU more, check have updated drivers (but if only 5 months old they must be quite recent) then run furmark while monitoring temperatures, sounds like the card may be overheating, earlier screenshots only showed CPU temps not GPU

 

[nolimit87]

You could see the GPU temp while gaming on the second screenshot. It says 45 degrees C, it has never gone above 50 degrees C (when gaming). The drivers are up to date.

Something to add on: it seems the restart happens when I'm gaming + browsing.

I found someone with a similar problem: Computer Rebooting Frequently - Homebuilt - Systems

 

[Pauly]

So it does, I would still try out your GPU for a run see what the results are, if crashes are always when gaming then its likely to be graphics related

 

[nolimit87]

I just did furmark test and it rebooted when reaching 69 degrees C. So does that mean the problem is with the GPU?

 

[Mellon Head]

See if it does it more than once. It could have been a coincidence. 69C is a little warm for an ATI card, but I don't know about Nvidia cards. That temp may not be a problem for them. Someone with some Nvidia knowledge would know more about that than I would.

 

[nolimit87]

Second try, I let it run for about 30 minutes, it stayed at 70°C (max) so I stopped it because I am not sure how safe it is to run furmark for a long time.

 

[Pauly]

Did it render ok ? any artifacts ?
google the picture to see what its supposed to look like and check yours is displaying correctly or post a screenshot of the image when running

 

[nolimit87]

Here I attached the screenshot. No artifacts after running it for 30 minutes. Do I need to run it again? How long should I run it for?

 

[nolimit87]

So, out of curiosity I tried to run WEI (windows experience index) today. It seems to reboot the PC every time I try to run it. It's like rebooting my PC within the first 30-60 secs running it. I know it used to be able to do the assessment when I first got my PC.

Also I found another condition whereby my PC would reboot. It is when I have my game clients opened and at the same time I have my browser opened to do some browsing. However, just gaming (without opening browser to do some surfing) seems to be quite safe.

 

[Pauly]

That furmark screenshot is not rendering properly and is massively distorted, the background blue is supposed to be smooth curves like this

I would investigate your gpu further, try uninstalling your gfx driver and running http://www.sevenforums.com/tutorials/83814-drivers-clean-left-over-files-after-uninstalling.html to clean everything out then reinstall a different driver but only install the basic package and leave out any extras like CCC/optimus and see if you can get your gfx rendering properly