Repeated crashing, possibly faulty power supply?

This is my computer: CyberpowerPC Stealth Raider 250 Desktop PC Intel Core i7 4790 (3.6GHz) 16GB DDR3 2TB HDD Windows 7 Home Premium 64-Bit - Newegg.com

I got this computer in November. I didn't used to have issues, but in the past two days my computer has been dying while gaming. It doesn't blue screen, it goes straight to a black screen and I have to hold down the power button to power it off and restart. Sometimes, when I restart the computer, there will be a BSOD notification (as in, the little window popping up just to let me know something happened), but not always. This culminated today in something like 3 crashes in a row within minutes of each other, and then I was unable to even see my screen as in when I turned it back on the computer's lights came on and its fans were running but there was no output to my monitor. I opened it up and tightened any connections (nothing was really loose) and tried again and this time it powered up, hence me being able to post this. My power supply is 450W and I'm thinking maybe that it just can't handle my gaming and I should replace it with a 600W supply, but obviously don't want to do that without being sure that's the problem.
I looked at the dump files and I saw they mentioned my graphics driver but I have kept it up to date.

It's within the one year warranty so perhaps I should just send it back.

Thanks for all your help.

hi,

well according to the graphic card spesifications should be using a 500 watt power supply but i personaly would want something in the 600 watt range and with a good make like seasonic or XFX power supply. but wait for a BSOD expert to comment on your thread.

i would see if a friend or relitive has a spare power supply thats atleast 500 watts to test with.

I bought a Corsair 750W power supply off Amazon today, but how sure are we that this is the power supply going? Could it be something else or is it almost definitely the supply?

can not be 100% certain going to be the power supply either way your current one is not big enough for the system. it could be a contributing factor in the problem. let see what happens when new supply is installed i would wait until then to use that computer.

Thanks for your help. I'm not hardware savvy. How do I check if I have that slot? I looked at the back of my computer and didn't see anything that looked like that to plug my monitor into.

Fezzik said:

Thanks for your help. I'm not hardware savvy. How do I check if I have that slot? I looked at the back of my computer and didn't see anything that looked like that to plug my monitor into.

it would be in a vertical position and be blue in color.

Is this it? https://i.imgur.com/iAxAkIe.jpg