With known multiple problems...the first thing that I would try would be:
a. Removing anything nonessential (card readers, USB connections which are not keyboard/mouse) physically from the system.
b. Repair install of XP. This will not remove any programs or data files, but it will provide a new bunch of system files.
How to perform a repair installation of Windows XP if Internet Explorer 7 is installed - http://support.microsoft.com/?kbid=917964
MS, XP Repair Install Procedures - http://support.microsoft.com/kb/315341/EN-US/
Windows XP Professional Repair install from CD - http://www.windowsreinstall.com/winxppro/i...dexfullpage.htm
Ignore the title, the repair procedure is the same for XP Pro and XP Home.
A repair install of XP (if successful) would also require reinstalling about 100 updates since SP2 came out...or simply installing SP3. I'm not out to convince anyone to install SP3 but...understanding what SP3 (a collection of critical updates since SP2 came out) and understanding that lack of SP3 contents makes a system more vulnerable to problems...dictated my installation of SP3 on both my desktops.
If problems still persisted after a repair install, I would do a clean install.
Additional reference material: Windows Xp Service Pack 3 (sp3) Information - http://www.bleepingcomputer.com/forums/t/146857/windows-xp-service-pack-3-sp3-information/
Edited by hamluis, 15 July 2008 - 08:54 AM.