And then do what? I ordered the recovery cd's and put in setup disk 1. It said it was to clean HDD and to please wait. After that it said to take out cd and reboot. That is when I got the Bootmgr is missing error message.They sent me 4 cd's 2 for set up if needed and 2 with the programs that came with the PC. The PC is a Acer Desktop AM1640-U1401A.. Original OS is Vista. I just don't what to do from here. As anyone had to do this before or know what to tell me to do? I would very much appreciate it.