thanks for the replies and sorry for the late answer, i just wanted to clean the computer from all the viruses and trojans before working on this problem.. thanks to TSF Security team now i have a clean computer..
linderman: yes when i unplug the printer and webcam it doesnt even check for USB mass storage device, and before unplugging them i checked Device manager in windows and saw an error on USB mass storage device. Now while unplugged theres not even a thing called USB mass storage device. So i'm kinda confused..
My printer was plugged to one of the onboard usb ports of the motherboard while my webcam is on the cabines usb port (front of the cabinet).
before doing chkdsk, i will try some different plugging to see if it would work properly while plugged...
thanks in advance.