Crashes possibly related to hardware

Solution edit: The problem was my power supply. I put in a 550 watt power supply and it doesn't crash anymore.

 

This past summer my computer started to have a crash where during games the screen would go black and all the fans would rev at full speed. I figured that it was overheating so I flipped some fans to get better airflow and didn't do too much cause I figured I would be upgrading soon anyways and most of the games I played consistently didn't trigger it. I had an AMD FX 4100 and gigabyte 78lmt sp3 with a GTX 550ti in that computer. I just upgraded to an AMD 8350 and gigabyte 78lmt usb3 with a GTX 970 in a corsair air 240 with lots of fan and an after market cpu cooler to keep temps down. I have been monitoring temps with HWmonitor and aida64 extreme which are peaking at around 60C in The Witcher 2 but it still crashes and goes to a black screen. The difference with the new system is that the fans don't rev and the system will restart it's self, I usually don't let it complete the restart in case it is heat related. I'm using the same 450 watt PSU in both systems and pcpartpicker didn't flag it as incompatible for the GPU. I'm wondering if this is heat, power, or software related. Does anyone have any ideas what could be causing it?

Other pertinent info:

I didn't replace the SSD with OS and programs on it or the HDD for storage of everything else

I ran some benchmarks after the most recent crash to see if it might happen during one of those. It didn't.

I recently had an issue where windows decided it was no longer vaild for no specific reason. This was on the old system and was resolved.

Any help would be greatly appreciated.

It seems that you may have a slightly under powered PSU. If I read it right, your video card recommends that you have at least a 500 watt supply -- not the 450W you have now. Of course, higher watts is always better but probably not when it comes to your wallet.

I would also suggest looking at the quality of your PSU too since it may be that a poorly built PSU is what's really causing your problems. Assuming you have good heat dissipation in your system meaning having good heat sinks, airflow and such, it could simply be a matter of bad components in your PSU (bad capacitors, usually). That's my 2-cents.

For more, I suggest looking at the following article: Power Supply Requirements for Graphics Cards

 

Thanks that what I was thinking but I wanted to get second opinions before I did anything.

That power supply being used and smaller is probably not sufficient any more and then that gigabyte motherboard is pretty bad so that could be failing under load.  

Depends on the power supply.  I'd suspect the motherboard first, though.