After downloading SP3 for XP my computer would not start.I started in SAFE mode. I removed Norton 360 from my computer and re-downloaded SP3. I re-installed Norton 360. The PC restarted that evening but failed to restart the next day. Issue 157 suggested replacing GDI32.dll by booting from CD. When I booted from the CD the PC started normally without any 'Welcome at Setup' screen and seemed to be working fine. I removed the CD from the PC and it rebooted fine once again.
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