#Master reboot virus locations windows#
Copy a new NTLDR file from the i386 directory of the Windows CD-ROM to replace the existing one. If the system still fails to boot correctly, use Attrib.exe or File Manager to remove the file attributes from the NTLDR file located in the root of the system partition. If the boot sector on the boot drive is corrupted, this should repair it. Choose the Inspect boot Sector and Restore Startup Environment options. Run Windows Setup and choose the Repair option. If the primary boot partition is a file allocation table (FAT) partition, boot from an MS-DOS disk, perform a SYS C: command to make the drive MS-DOS bootable, and then perform step 5 to replace the Windows boot sector. Before using the FDISK /MBR command, you should be certain that your computer is not infected with a virus.
If your computer is infected virus, using the FDISK /MBR switch may prevent you from being able to start your computer. Boot from a virus-free MS-DOS version 5.0 or later boot disk with FDISK on it. MS-DOS-based virus programs can be run from an MS-DOS boot disk.Įnsure the master boot record (MBR) is valid.
#Master reboot virus locations software#
MS-DOS-based virus software is sufficient for this purpose, even if the file system is NTFS. Run the latest virus scanning software to verify no virus is present. If the system cannot be started from a Windows boot disk, you will most likely have to reinstall Windows and restore from tape. If there are invalid partitions, the best solution is to re-create those partitions and reformat the affected drives, then restore the data from the most recent back up tape. Use Disk Administrator to verify that partitions on the boot drive are the correct size. After Windows is running, immediately back up any data of value. If you can start the computer without errors, the damage is limited to the master boot record (MBR), boot sector, or the NTLDR file. ResolutionĬreate a Windows boot disk to start the computer.
The master boot record (MBR), partition tables, boot sector, or NTLDR file is corrupted. When you restart a Windows x86-based computer, the computer stops with an empty, black screen immediately after the power-on self test (POST) is completed. This article provides a solution to an issue where restarting a Windows x86-based computer fails with black screen.Īpplies to: Windows Server 2012 R2 Original KB number: 155053 Symptoms
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