I recently formatted my hard drive and re-installed windows (see https://www.techspot.com/vb/topic97683.html) and everything seems to be working fine. One problem - the keyboard is behaving strangely; it replaces the " key for the @ key, the pound sign for the # key (I can't even find the key for the pound sign) and the # key for the |. I have no idea what is going on.