due to heavy dust i was cleaning asus motherboard m2n68-am plus.after job done when i started pc error came like"USB OVERPOWER DETECTED...COMPUTER SHUT DOWN IN 15 MIN"i tried to enter in bios i got error like"PRESS LTR F2 TO EXECUTE ASUS EZ FLASH 2...CANT DETECT TMP DEVICE! AND SO ON...."i enter asus flase utility and i had saved bios file at desktop.so i uprade bios.event was successful without any error.but computer giving same error again and again of usb overpower and execute asus flash.does it mean my bios is currupted?plz help.