My computer keeps crashing!

[Antidisestablishmentarianism]

I have had my built computer for months now. I used to have a 550w psu recommended by someone but apparently it wasn't enough because my computer kept shutting off randomly. I ended up getting a 750w psu and have had that for about a month now. My computer keeps crashing (not freezing, just instantly shutting off) when I'm under load. Occasionally it crashes as soon as I start up my pc. Do I have a bad power supply? Should I get a new one?

 

[D_Know_WD]

Hi there Antidisestablishmentarianism,

As your system shuts off when under load, then it is most probably your PSU that is causing it.

Cheers,
D_Know_WD