I installed update KB 944533, KB943055, KB946026, KB946456, and KB946456 and after rebooting I got an error saying a sys file was corrupt I believe. I restored from a complete backup and tried again. This time it said netio.sys was corrupt. I restored from a complete backup yet again. I haven't tried anymore windows updates as I don't feel like restoring from a backup again. Fortunately I had backed up my computer the day before I tried this. Any idea what might be causing these problems or where I can look to for more help?