I have had my desk top computer about 7 years. It was performing perfectly untill today. I noticed that the screen saver photo slide had stuck on one image i rebooted windows hallfway through the process all power went i pressed the reset button the power button and reset button illuminated briefly and then went dead. Each time i try to power up the power and rest button illuuinates for 1 second and then goes dead. Any ideas?
Regards Dave Looker

Welcome to techhelpforum.

If you've done any "tinkering" on the inside of the enclosure, check all power/data cable connections to ensure they are fully engaged.

If you haven't been inside the enclosure;

1. Ensure your power is good at the wall outlet
2. Ensure your machines power cord is good and fully engaged in the wall outlet and the rear of the power supply
3. Ensure any dust etc is cleaned from heatsinks/fans (and all fans are running freely)
4. Pick up a power supply tester to check your power supply.

Power supply testers can be obtained at most computer stores. There are cheap ones (giving red/green lights to indicate good/bad), and there are better ones which provide readouts on the power supply rails indicating +/- variance on the supplies. Deviations of more than 5% indicate a new power supply may be in order.

Post back with your results and any further questions.