Computer Shuts Down A Few Minutes After Turning It On
I have a Dell Dimension 4700. I've been using it for 3 years now. Today, I turned it on, I was about to get to the screen to select which OS to boot from, then it just suddenly shuts down. I tried again, this time pressing F12 on the Dell screen for sytem info, in a few seconds the same thing happened. There isn't a power switch on the back, so I just unplugged it for about 30 minutes, plugged it in again and turned it on. This time I was able to select which OS to boot from, then 2 seconds later it shut down again. This same thing has been happening for the past hour. Each time it shuts down, the power LED blinks yellow and I have to hold it for a few seconds to turn it off then retry.
The last thing I did before this started happening was that I shut down he computer by holding the power button for 4 seconds instead of shutting down properly, I think this has something to do with it.
This has happened before in the past a few times, but never so much at once and I was able to get on eventually. I haven't added any new hardware or installed anything. I don't think its Windows XP since a few times it shut down before I was even able to select which OS to boot from(Both OSes are WinXP on different hdds in case one ever screws up).
So can anyone help?