I shut down my computer a couple days ago and when I restarted, it got to the desktop (Windows Vista) but suddenly the monitor went to its standby mode. Now sometimes I'll reset it only to have it happen right away. Last night I had the computer running OK until a little bit ago when we went out, and it happened again.
I've noticed that when this happens, the CPU itself is really making a roaring sound like it's working hard. If there was any audio coming through on the speakers or headphones, it'll get stuck looping until I shut the system down. I bought the PC about two and a half years ago. I'm wondering if maybe the power supply needs replacing but I'm not too experienced with PC hardware. I opened it up yesterday and dusted it out pretty well. It's a Gateway DX4300-03:
AMD Phenom X4 9750 Quad-core
ATI Radeon HD 4650 1024MB
8 GB DDR2
I've noticed that when this happens, the CPU itself is really making a roaring sound like it's working hard. If there was any audio coming through on the speakers or headphones, it'll get stuck looping until I shut the system down. I bought the PC about two and a half years ago. I'm wondering if maybe the power supply needs replacing but I'm not too experienced with PC hardware. I opened it up yesterday and dusted it out pretty well. It's a Gateway DX4300-03:
AMD Phenom X4 9750 Quad-core
ATI Radeon HD 4650 1024MB
8 GB DDR2