MBR, Main Boot Record, could be damaged due to virus attack, mistaken operation, or sudden power failure. Once MBR is damage, we may encounter boot problems such as MBR error 3 and face black screen only. Rebuild MBR of MiniTool Partition Wizard helps rebuild MBR in quite simple operations even if Windows can not boot. That is because this partitioning program offers a bootable disc to boot computer without Windows.
How to Rebuild MBR
Since Windows can not boot, we need to download MiniTool Partition Wizard Bootable CD. Then, burn it to USB flash disk, CD or DVD with burning software. Next, put the bootable disc to CD driver and boot computer to get the following interface: