I've been having a problem trying to install Windows 7 on a Windows Vista computer. Vista was running fine but wanted to upgrade it, which should be simple. I've done the same thing countless times on other comuters without a problem. So I put the Win 7 install disk in the optical drive and the install fails while windows was "installing files". Ran all the system checks to make sure there was no problem with the optical drive, memory, etc., and the install still stops mid stream telling me there was an I/O error. I can only think it's beause of the [EMS ENABLED] note on the "boot from disk" screen. Research tells me the EMS designation has to do with a machine that's set up as a server...which this one was not, and I haven't yet figured out how to change that. Is it in BIOS? If so, where, and how do I get to it?