You hav a virus in ur pc.
its simple to remoove it,
FOLLOW INSTRUCTIONS GIVEN BELOW
1. Open Registry. (Start--->Run, type in ‘regedit’ ,hit enter)
2. Go to registry key “HKEY_LOCAL_MACHINE,SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL,checkedvalue” and change its value from 0 to 1. Hit F5.
3. Now system shows all hidden files and folders.
TRY THIS TOO
1. Open Task Manager
2. In the ‘Processes’ tab terminate ‘svchost.exe’ having User name as your login name.(IMPORTANT: Do not terminate other ‘svchost.exe’ processes having user name ‘SYSTEM’ ,these are system processes essential for windows to work properly)
REALLY IT WORKS