Hello. My computer restarted a while ago when I was surfing the net. It didn't even do a full restart, screen just turned black in all of a sudden. Monitor LED was blinking, keyboard and mouse colors were messed up at first then later they stopped working and long press power button on the case didn't work at all. PC didn't want to turn off, so I had to switch the PSU button. It's working now like it has before (as I am writing this from this PC), but this is the first time of it happening, so that's the reason I was very worried and immediately went seeking for help. It could be anything, but my suspicions (in the most-likely-possible-failure order) are PSU, CPU, motherboard and maaaybe RAM. PC parts are not pretty old (1-2 years old) and I've been upgrading them over time. The only part that I will definitely change in a close future is this trash and cheap 400W PSU which doesn't even have a brand. I think it is most likely a cause of this problem, even though it did it's job perfectly over the last 2 years, it perhaps slowly approaches the end of it's life. Here (click) you can see my PC specs and idle temps. Thanks in advance.