Computer keeps crashing during games without error or warning message

[Foreteller]

For the past couple of days, my computer has been restarting whenever I'm playing a game. I just brought this computer off of a friend and it was working completely fine for the first month I've had it. Just until a couple of days ago, Every time I play a game for at least 25 - 30 minutes, my computer just restarts on its own without any warning. I don't get the BSOD or an error message when I'm brought back to the desktop. I've looked up on other forums with the same problem but most people say it's because of overheating issues with GPU or CPU. I don't think that's the case because my CPU stays between 35°C - 44°C, my graphics cards usually ranges from 45°C - 52°C and my motherboard stays between 49°C - 59°C (according to Speccy). Can anyone help please or give any advice so I can fix this problem?

 

[alexoiu]

Have you recently updated some drivers (graphics, for example)?
Try a system restore.

 

[Foreteller]

Have you recently updated some drivers (graphics, for example)?
Try a system restore.

Now that you mention it, The restarts haven't started happening since I updated me Nvidia graphics driver a couple of days ago. But, I did do a full clean system restore and the problem still occurs.

 

[alexoiu]

Then I'd try reinstalling Windows, an older graphics driver (the one on the card's DVD) and testing.

 

[Ryan_26]

Then I'd try reinstalling Windows, an older graphics driver (the one on the card's DVD) and testing.

Reinstalling windows should be the last thing you do not the first...