Random BSODs (Started Yesterday)

So since yesterday I've been getting a bunch of BSODs (only 1 today, and a couple yesterday) for no (to me) known reason. I was browsing facebook / spotify and all of a sudden the sound started chopping instead of playing any music. Then the speakers, mouse and keyboard died, then the computer shut down. First time I tried starting it up again it made the usual start-up noises (not from the speakers, but from like fans and stuff I suppose) however there was no signal to the screen. I tried restarting it a couple of times with no avail.

I waited like half an hour and started it up, this time the screen had signal and I got the "Windows was not closed down properly" - "Start windows normally " - "Safe Mode" options. So I went into safe mode and then got another BSODs, this continued for a couple of times until I managed to get "Start windows from last working customization" and the computer worked properly again.

Then today I once again was browsing Facebook / Spotify and I got another BSOD, the sound went all choppy again however this time I got a really quick blue screen with a ton of information that I didn't have time to read because the computer restarted itself really quickly.

Computer specs: (I really suck at computers so this is all the information I could find for now, if you need more you'll have to tell me how I can find it :P)
Windows 7
AMD Phenom Triple-Core Processor, 2.3 GHz
2.5 GB Installed RAM
32-bit system