logging in logging off

[ondemandemails]

friendz i came abt a special problem within last 7 days.
1 of my system got corrupted in such a manner that as soon as it log in in any user account it log off, in safe mode also.
this is true for administrative account also.
i have to format it.
again on another system same thing occur when i updated my AVG internet security by copying updated files from another computer. but after deleting these files computer accounts log ins.
any valid reason.

[47shailesh]

Do you use Genuine XP ...

[sakumar79]

Try repairing your installed xp using the xp cd...

Arun