Robbie G

I have an OEM version of Vista 64.

I'm thinking about upgrading a hard drive (possibly the one vista is
installed on) and installing more RAM. My only concern is if Vista will
think it is a new computer, and inactivate itself.

If I get a message saying the hardware has significantly changed, will I be
able to call Microsoft and reactivate it? Or could they possibly make me buy
a new license?

Thanks for the help,

Robbie G