I have an install of XP Home Service Pack 3 running on a Dell D630 laptop, with the latest avast! Internet Security. Most everything works as it should, with no speed problems, suspicious network activity or difficulty running programs. However, recently I lost the ability to move or delete files in all folders on the hard drive. I can move and delete in Safe Mode, but have no control in normal mode. In normal mode I can open, create or modify files without a problem using a variety of programs, just not move or delete. The error I get is the 'Access Is Denied, Check to See if Hard Drive is Full Or Write Protected, and File Is Not In Use' message.
Also Microsoft update and Firefox update do not work, but avast and Malwarebytes do.
My logon has administrator status, and I have confirmed that I have ownership of the files, either as a user or administrator. I have tried reestablishing ownership through safe mode just to be sure. Suspecting my user profile to be corrupt, I have created a fresh one with the same results. I have run all the scans from avast, Malwarebytes, and MS Safety Scanner with no threats found.
I'm not sure where to proceed from here. Any help would be greatly appreciated.
Edited by dwainw, 29 June 2012 - 08:22 AM.