windows MBR fucked up

Use your CD Windows to recover your MBR. here we are……….trengtrengtrengtringtreng

diskpart
list disk
select disk 0 [the disk where windows installed]
list partition
select partition [the partition where windows installed]
active
exit

after that, go to Startup Repair…blingblingblingblaaaa…it’s done!
everything above is taken from here