I would like to know some information before we proceed further.
Type of your Operating system with service pack details (Ex :windows Xp,Windows Vista ,Windows 7).
Have you done any haradware changes most recently (EX :System restore ,Reformate,.....etc).
my operation system is windows 7 and
i have not done any hardware changes
am wondering if the problem related to an existing virus
in the system or a problem with the operation system
Existing Virus ! So is your computer infected?