My XPSP3 clock won't keep time when switched off. I have tried resetting and changing which server it's supposed to use etc. but still I always seem to have travelled back to 2006 when I boot up. Cock everyuthing up and can't get into email etc. until clock has been corrected. I recently did a full format and reinstall on my C drive. As far as I know all the updates have been done.