Hi PC hardware experts,
I use an old HP Compaq DC7700 Small Form Factor
desktop PC running WinXP Pro, and for years it has had this problem where, if I do a shutdown, it will shut down and completely stop, but about 1-2 secs later it will start up again. So, I have to quickly power it off at the wall as soon as I hear it stop, to avoid it restarting. After that, if I come back later that day, and turn it on at the wall, it will usually require me to press the power button for it to start up, but if it's been off overnight, and I turn it on at the wall the next day, it will always start up (after about 1-2 secs) without me having to press the power button.
Is this likely to be a problem with the power button (micro switch?), or what? (I don't think it's the power supply, because I've just replaced that (the old one died) and the problem still happens.)