Hi I'm a newbie here. 5 year old desktop computer Win XP Pro Normally to start this computer it is Power on at the wall then press button on front panel. Last few mornings its gone like this and getting steadily worse: Power on at wall - front button - starts to boot, may get as far as Welcome screen - then turns itself off Press front button - nothing Power off at wall - wait - power on at wall - immediately starts to boot (ie no front button) but only progresses for typically 5 seconds (sometimes 15 secs) before shutting down. Do this umpteen times - maybe 5-10 mins and eventually the boot completes. Once booted runs fine all day. Once it's been running, if I shut it down and reboot, it comes straight back up - no problems. Any ideas?