Power problem?

[imported_haris]

I've been having problems with my system for the last couple of days now. I don't have a spare pc that I can try swapping parts with to narrow down the cause. The system has been running w 0 probs for over 3 years. For the most part once it's on it's been running w no problems and the problem occurs when I shut down and then try to turn the system back on later. It begins to power on and load windows and will then immediately shut off. The power light on the fron will blink on for about 2 sec and then off for about 2 sec. If I unplug it, it seems to reset and usually boots fine again. Today was the first time it shut off while I was already in Windows and working. All of the fans appear to be working and I've got no wires/parts that might be hitting against fan. Any ideas what might be causing the problem?

 

[Intexity]

hard to tell without you being able to swap parts. I would start with the psu though. maybe time to update your computer anyways. a parts listing would be nice.

 

[daniel49]

PS would be where I would start also

 

[Vetterin]

I have had the same thing happening to me the past few weeks. Generally my computer would start up and most programs would run fine but when I'd start running a video for a few minutes it would just shut down. In the last week it started shutting down as it was connecting to the internet. I thought it might be a virus at first but I replaced my psu on Tuesday and it has been running just fine ever since. I guess maybe psu's do loose some energy with time.