+ 0 Votes Had a similar experience Gromit 6 years ago I was building a new PC back in February right after Vista came out. I bought a full version of Vista Ultimate, not the OEM version. I changed a DVD reader/writer and Vista deactivated itself. I tried to reactivate online, but got a message to call Microsoft instead. Got an Indian guy on the phone who questioned me like I was a criminal before finally agreeing to reactivate. He told me that if I changed any hardware, this would happen again - no apologies. To this guy, I was a potential software pirate and that's the way I was treated.