Hello Daniel,
Thank you for posting your query on Microsoft Community.
As per your description, it seems like there is a corruption of Windows System file or boot files due to which you are facing this issue. I will certainly help you with the issue. However, we need few more details to understand the cause of the issue better.
- Have you recently made any changes on your computer, prior to the issue?
As of now, I recommend you to try the following method:
If you have Windows 8 product key and if you don’t have Windows 8 installation media, you can download .ISO file then create installation media to perform refresh or
reset of Windows.
**Create installation media for Windows 8.1**
Following is the way to get to the Windows Startup Settings screen in Windows 8 if you are unable to go past login screen.
- If you're not signed in to Windows, tap or click the power icon
from the sign-in screen, hold Shift, and then tap or click
Restart.
- Choose option “Troubleshoot”.
- Choose “Advanced options”.
- Choose “Command Prompt”.
- Run, chkdsk /r command. (If a system file required for booting up has become corrupted, running
**System File Checker**
may help you).
- You may be required to change the active partition using
diskpart. An Active partition is the one that your BIOS detects is the one that will start your computer.
It is important to note that changing Active Partition wrongly may make your computer unbootable. So do not by mistake, mark a partition as Active, if it does not contain the NTDLR loader for your operating system.
- Follow the steps till step 4 and in the Command Prompt please run the following command.
- Type, diskpart and hit Enter.
- Type, list disk and hit Enter.
- Now select the disk – it will typically be
Disk 0 – and set it as the Active disk. Assuming it is Disk 0, the commands become:
select disk 0
- Now list the partitions using:
list partition
- Assuming your partition number is
0, the command becomes,
select partition 0
- To make it the Active partition, type the following and hit Enter:
active
- Exit
diskpart.
Repair Master Boot Record. It is one of the effective troubleshooting steps, to fix boot issues, and will hopefully help you fix the problem.
- Follow the steps till step 4 and in the Command Prompt please run the following command.
- bootrec /RebuildBcd
- bootrec /fixMbr
- bootrec /fixboot
- Exit
- Now go ahead and reboot your system. In some cases you may need to run some additional commands.
- bootsect**/nt60 SYS**
or bootsect /nt60 ALL
It’s wise to
backup MBR or create a System Recovery Disk so that in case something like this happens you don’t have to run for the Windows Recovery Disk. To create a system recovery drive in Windows 8, follow these steps:
- Press Windows + R and type in RecoveryDrive.exe
- Click Next
- Once you insert the
USB drive it will start creating the Recovery for your USB drive.
Important for check disk:
While performing chkdsk (check disk) on the hard drive if any bad sectors are found on the hard drive whenchkdsk tries to repair that sector if any data available on that might be lost.
Note for Drive Partition:
It is important to note that changing Active Partition wrongly may make your computer unbootable.
Hope this information is helpful. Please do let us know if you need further assistance with Windows, we’ll be glad to assist you.