I have a new laptop ASUS X554LA, it was with FreeDOS system, i tried to install windows 7 on it and it says there is no partition to install windows on. I tried deleting all the partitions and creating new ones, but i tried to restart laptop and now there is a message " no active partition found". When i try to get to windows installation with flash drive, there is a message " Bootmgr is missing. I cant do anything, only get to bios.