win7 bootmgr is compressed solved

My windows 7 on my notebook would not let me boot :

saying Bootmgr is compressed
Press Ctrl+Alt+Del to continue

you will need : CD OS Intaller windows 7

insert your OS CD
go to DOS window and type in your OS driver (usualy C:/
type in bootrec /FixMbr
then type in bootrec /fixboot
then type in bootrec /rebuildbcd
then type in exit
restart your coputer
it will work 100% only if you prompt at the same order

good luck