To TECH or another rescuer.
Thank's for your post.
My pc is a AMD Duron 1.3Ghz with XP pro , Avast 4.6.
I have try to repair and reboot how you have said but the resident don't run always.
Yerstheday, I have convert my system drive the fat32 to NTFS.After I have run Zebprotect for protecting
my communication ports and using of IE.My session is a admin's rights but in propriety of drive c (system drive),security and sharing, I have appropriate to me the owner's rights for disk,folders and files and also of my second drive where avast is installed.