NOPE You did it ok It's Microsoft that is A.F.U. You may have to "tinker" a little with the SP3 install to get it right. also go to the MFR's website of Your computer to see if there are any "issues" with the SP3 You can also install one component of the sp at a time to see which one is messing with the system but this is a painful and laborious process THANKS MICROSOFT! Hope this helps.
Clark
May 2008
I can answer this question...
Windows XP SP3 reset machine, lost local config, why?