A:AnswerHere are a few steps not sure if they will work or not.
Check the plug into your PSU (the plug that goes from the wall to the computer) make sure it is free of dust and debris and securely plugged in.
If your PC is plugged into a surge protector or outlet bar change that to make sure that isn't your problem
windows has some bugs with sleep mode try to turn it off Start -> Settings -> System -> Power & Sleep -> Screen & Sleep -> Select Never (you have to manually sleep your computer when finished using it though)
go into an intensive program or game and open task manager or a 3rd party program to monitor GPU and CPU temperatures. if they get too high the pc to turn off to avoid damage to the components.
look at your fans and vents make sure they are free of dust and debris.
update windows, BIOS and your drivers.
It could be a malware issue have you downloaded anything from sketchy websites?
Did you overclock any components? if you did it would take a lot more diagnosing then I could do here
If none of these help I advise calling the GeekSquad. BestBuy's computer help service.
A:Answeras long as you dont buy an enthuist SSD that hooks to your PCIE 16 (which you only have one of and is used by the GPU) then any standard SSD will work