Ok, just recently within the last 2 days my computer has really been acting up. 90% of the time when I turn it off I put it in standby mode. Well i did this yesterday and when it was off 5 min later it would try to boot up then shut off immediately. It kept doing this until I pulled the plug and turned the switch off. Then I loaded it up and it was fine. I again put it in standby and went up to get a shower, came back down and noticed it was fully booted up. Also it randomly restarts almost constantly now out of nowhere on its own. I tested it and it does the same thing while fully turned off.
I put my power supply to a meter and everything tests out fine, so I'm almost 100% sure that it isn't that. The only thing I can think of is that since it is randomly restarting like this that it could mean that my cpu/motherboard is going. Oh and no my cpu or anything else isn't overheating. I also cleaned it out really good and it still does it.
If anyone has any ideas on what it would be I would greatly appreciate it.