I clicked ok, then I tried to Reboot my machine.
The machine came on in F12 mode. I opted for Safe Mode, the usual text started scrolling up the screen, then the screen went blank, Windows XP came on the screen like it was loading, a blue screen flashed up for a split second, then it went back into F12 mode.
I tried to opt for all the options eg: Safe Mode with Network - Safe Mode with command prompt etc, but the same thing kept happening.
Eventually after about an hour or so of relentless attempts Start Windows Normally finally worked and XP loaded.
This is a fairly new XP installation (just a few days old) and as far as I can see there is no malicious software on my Pc to cause such a thing.
I appologise if I have posted this in the wrong Forum, but I'm not that sure what catagory this falls under.
Any advice would be appreciated as even now my Tune up utilities still has the same error message, and I know if I was to switch off my machine I would have the same problem getting back online.