i just unplugged usb drive from slot (didnt use safe unplug ) and system hanged so i was forced to restart the system but when i restarted it didnt start and with the help of technician i found that
first RAM slot of the mobo wasnt working and when i used the RAM on 2nd slot system booted but OS wasnt regognised and i was forced to reinstall the OS (even repair didnt work)
i just want to know fault happened due to just unplugging usb drive
or fault with mobo itself nd why win 7 always hangs when usb drives is unplugged without safe unplug!!!