Can a mouse hold a virus as my optical mouse via USB was working fine then i got a nasty virus and i have swappedmy mouse to another PC (kids can have the wheeled thing!!) It does not work and is fully installed etc. The virus (I think) stopped (one by one) my printer, my mouse, my speakers then my HDD. The hDD will now not format either!! Motherboard is sound allegedly (according to PC Tech).