Removal of those types of entries manifested in Autoruns...should have had no impact at all on system functioning.
Perhaps you removed something by mistake.
As for the mouse problems...the typical proceure I use would be to uninstall/reinstall the drivers for it via Device Manager. If no joy, then I would assume that the mouse is bad and try a replacement.
Are you saying that you did not have system freezing/hardware malfunctions...before you removed these entries?
System manufacturer and model?
Do you have a MS Genuine XP CD for installing XP?
System freezes may occur for a variety of reasons, so any error messages that appear onscreen...are important.
What exactly are you doing...when these freezes occur? Any particular application being used?
Edited by hamluis, 12 May 2011 - 07:22 AM.