به نظر من شما رو سیستمت یک Worm داری. ویروس کش 'Sophos Anti-Virus' رو دانلود کن و مطابق دستورالعمل زیر موارد رو انجام بده, شاید مشکلت حل شد :
Close down all programs.
Go to Start|Programs|Sophos Anti-Virus and run the Sophos Anti-Virus program.
Select the 'Immediate' tab then select the relevant drive.
Go to Options|Configuration. Select the 'Disinfection' or 'Action' tab, (according to what is displayed in your window), select 'Infected files', select 'Delete' then click 'OK'.
Click the green 'scan' arrow, or the 'GO' button (as appropriate) to run the scan.
Delete the files. Run another scan to check it has gone.
Go back to Options|Configuration... select the 'Disinfection' or Action tab, then deselect 'Delete'. Click 'OK'.
Reboot and run a final scan to be certain it has gone.
اگر مشکلت برطرف نشد از راه زیر استفاده کن: (البته اگه ویندوزت XP هست)
Restart the computer in Safe Mode. Go to Start|Shut Down. Select 'Restart' from the dropdown list and click 'OK'. Windows will restart. Press F8 when you see the following text at the bottom of the screen "For troubleshooting and advanced startup options for Windows 2000, press F8". In the Windows 2000 Advanced Options Menu, select the third option 'Safe Mode with Command Prompt'.
At the infected computer, place the CD in the CD drive (D: in this example).
At the command prompt type
to access the CD drive. Type:
Then type:
SAV32CLI -REMOVE -P=C:\LOGFILE.TXT
to remove the worm.
Before leaving Safe Mode, edit any registry entries mentioned in the worm analysis recovery instructions.