Desktop won't Start Up

[Coach17]

I have been having this issue for awhile now but now it is a problem. First issue is my power button. I have to push it just right for the PC to turn on. Must be a connection issue. When I finally get it to go on the PC keeps restarting. I also tried Safe mode and it will not get to that either. I have Windows XP Home. Do you think my hardware is going? Maybe it is something else.
All help is appreciated. I will reply with any questions yiou may have for me.

Luckily I have my Netbook to be sending this message out.

[Train]

Sounds like the power button needs replacing. Anyway what I would do.

[Coach17]

I took it into a local shop to have them check the power button. I am not sure about it restarting over and over without actually booting up.

[SuperSparks]

It's possible that could be caused by the faulty power switch too. Or it could be power supply issues, but I would replace the switch first and see what happens.