bootmgr is compressed

Hello I am having some problems with vista. I tried to install a driver for my 7960 hp printer and they don't have a driver for that model, so I install a different one for it. well it ask me to restart the computer, so I did and now the computer will not start. It said bootmgr is compressed press ctrl, alt, delete to restart. What can I do to get this computer working again?

Just start the computer in safe mode if started then uninstall the driver of 7960. it will def. solve u r problem