I have had a fairly stable install of Windrows XP for over a year now. I have had absolutely no problems whatsoever, until last night. I did nothing special, installed nothing new, but when I shut down my pc it went through all the normal steps but the power didn't turn off. It wont even turn off if I hold down the power button. Once it is in this state, if I hit the power button it will begin to boot up, but it will not turn on my monitor, I have found that in order to turn my pc back on I have to hit power, then hit restart for it to properly start up.
I have looked for answers and the most common way to resolve problems like this seems to be by activating apm, however I do not have an apm tab in either power management, or BIOS.
Any help would be appreciated.