I am running an asus mombo. its brand new but old model. and i have the next problem. sometimes at random times my pc freezing for 5-10 seconds and then becomes normal and at random times my pc freeze completely and all usb ports stop working. for example mouse , keyboard etc. One note from the time i bought the new mombo the vga graphic card was damaged i think. It worked only if you wouldn't install the intel vga drivers (and im sure i am installing the right drivers). if i install them my pc was not booting after the windows 7 logo. im 100% sure its not virus infection. what i want from you is to tell me if its a mombo problem or hard disk problem. thanks