It is not like I don't try everything I can before asking for help online, but I really ran out of ideas on this one.
I've been getting random BSODs lately, and I was mostly focused on possible hardware problems and tried all I could (upgrading BIOS, testing memory, adjusting voltages, latencies in BIOS, making sure there's no overheating, even did a low level format of my HDD before the last installation of Windows). I tried unplugging all hardware connected through USB except keyboard, but I am more and more sure it's not a hardware issue.
There's no general rule to when I will get BSODs, sometimes it's bsod free for 24 hours, sometimes for 10 minutes. Sometimes it just restarts all of a sudden and then when it loads Windows it crashes with BSOD this time.
I bought the new power supply thinking that the previous one maybe wasn't good enough, but the same thing happens with this one which is 650W.
The only programs that are, more or less always on, are Google Chrome, Skype and Winamp, of which Skype and Chrome basically always open when this happens although it happened with nothing on too.
I have attached the needed files. astronaut.zip