Computer restarting on start-up

  sjbell 17:16 01 May 2003

Yesterday, when I switched on my computer I had five cycles of it restarting shortly after Windows had loaded. In the end I turned the power off at the mains. I use XP and I used the F5 key to choose start using last known good option. This worked okay and I thought I had cracked the problem (I have turned the computer on and off several times since). However, today it happened again, although this time I only had to suffer one restart before it started normally. It seems to occur when Windows has finished loading and it starts to load programmes such as Norton Anti-virus, ZoneAlarm, the drivers for my broadband modem, etc. Does this sound like a software problem or a hardware problem? I could use the XP restore feature to roll back, but I wouldn't know when to choose as I can't link this problem with any updates except possibly a virus scan update or a windows update. Any ideas? I have backed up my computer in case of the worst!

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