Well, I consider myself a "power user" for about a decade, I've done countless Windows installations (starting with '95, IIRC) and even some Linux, but this is just astounding... never had this happen to me before!
So, in the last week, I decided to update all my computers to Windows 7 Enterprise x64. Three notebooks that were using XP or 7 Home x32. So far, installed without a hitch on two of them (Dell Inspirion 1720, ASUS K70IO), using same distro... Always clean install (full format of HDD before installing)... Always defaulting all the installation choices (except entering different PC name). Not using domain controller. Installed via network using program called "Serva".
When installing on ASUS UL20A, however, what happened is when it booted into the system, I've found myself with a user which does not have administrative rights, a system which has Administrator account disabled, and... well, no way to get anything to run with privilleges! UAC window says "type admin password and press Yes" but there is no textbox to type the admin password into! I cannot enable Administrator account because I don't have rights, and I can't get rights because there's no textbox (even if I'd knew some bogus password I haven't set)!
I'm reinstalling right now, hoping it was a one-off, but still, can anyone tell me what happened and why it happened, and how to deal with it?