Updating windows xp sp2
those that came with a computer and are tied to that computer.
A general advice, particularly after changing hardware, is to power everything down, including any routers, cable modems, switches, hubs, and the like, wait 10 seconds, then power them up again.
If you have the firewall set up properly, but still have network problems, continue with the Windows Network Problem Solver page.
Microsoft offers free technical telephone support for Service Pack 2.
At least you gain some peace and more time to look for a better solution. If that also fails or if you want to know more details, check the next subchapters below for detailed information on how to uninstall the service pack.
Click on Start, Control Panel, Add/Remove Software, and make sure that you have Show Updates selected at the top, if you have that choice at all. If that fails, roll back the computer, using System Restore. To get into Safe mode, tap the [F8] key repeatedly or hold it down while the computer is booting. If you cannot or don't want to uninstall Service Pack 2, you can perform a repair installation of Windows XP.