Installing Windows Vista... HELP :|


Beta member
Hello guys,
I have an acer laptop, which came out with XP, and then was upgraded to windows vista 32 bit with upgrade vista CD. I think bcz of some kind of virus, I lost my input devices (keyboard, and mouse). So, I backed up the data using an adaptor, and then formated the whole hard drive.
Now I am trying to install a fresh copy of windows vista on that formated hard drive, but its not happening. If I trying doing it using the same laptop, the msg comes "bootmgr not found", and if I try doing that using my other laptop (with this hard drive connected through USB), it says this can not be done via usb.

Any help will be appreciated.
Thanks a lot.
Take care.