I didn't know how it comes... but whenever I start my PC then this error message is appear its about floppy disk before this message an old error appears which was about there is no disk in the drive A:/ then I disconnected my floppy drive from motherboard then this message started appearing.. it also blocks my task manager,disk manager and drive manager.. whenever I command for these managers then they appear for a second or less and suddenly disappears... so I can't do anything to fix this problem... help me please