About a year ago I bought a new CPU for my PC (an AMD Phenom 8650 Tri-core). The first few times it turned on only took a little more time than normal. But then it started not to turn on at all, sometimes it would get stuck at the Windows logo, sometimes the screen would show “no signal”.
Turned out it was a RAM problem. I had two sticks for a total 3 GB installed (2GB and 1GB, which were working great for about 3 years) and taking the 1GB out helped and my PC would turn on and work as it used to. The 1GB stick of RAM was dead, my PC wouldn’t turn on with it installed.
After about a month I bought another 1GB card and it had been working fine until yesterday. I’d been away for a week, so the PC hadn’t been turned on for a week as well. When I tried to turn it on, the same problem appeared – booting would stop at the Windows logo. And once again taking out the stick of RAM (1GB, again) helped.
What could this problem refer to? A PSU or MOBO problem? Or maybe something else?