Gaming is very demanding and stressful on computers. So whenever problems occurring during heavy game play, but the computer works fine otherwise, I always suspect (1) heat, (2) power and (3) RAM. So you need to make sure your computer is clean of heat trapping dust and all fans are spinning, then monitor your temps. I use
CoreTemp to monitor my CPU temps. I also like
Speccy (from the makers of CCleaner) which provides much more "System Information" and now has a system tray applet too.
HWiNFO64 is also very (if not too) informative.
Speccy and HWiNFO64 will also report your voltages. The +12, +5 and +3.3VDC should be within ±5%. While these programs are not conclusive, the are pretty good. If they report voltages are missing or way off, that is most likely a mis-reading and should be ignored. And none of these programs test for
ripple and other anomalies that affect computer stability. The only way a "normal" user can verify voltages conclusively is by having the PSU tested by a professional, or by swapping in a known good PSU.
And for testing your RAM, I recommend
MemTest86. Allow the diagnostics to run for several passes or even overnight. You should have
no reported errors.
Alternatively, Windows 7, 8 and 10 users can use the built in
Windows Memory Diagnostics Tool (though I prefer MemTest86).
Note, however, that software based RAM diagnostic tools are good, but none are conclusive. To
conclusively test your RAM, you need to use sophisticated and
very expensive test equipment, like this
$4,000 Eureka Express DDR3 DIMM Memory Module Tester. So you might try running with just a single RAM module to see if it fails. Repeat process with remaining modules, hopefully identifying the bad stick through a process of elimination. Just be sure to unplug the computer from the wall and touch bare metal of the case interior BEFORE reaching in to discharge any destructive static in your body.
There are no restore points since I made a reset of my pc a week ago.
Why did you reset the computer? And some system specs might help. At this point, we don't even know if this is a PC or a notebook.