Windows 10 black screen, First of all, try to access the recovery environment, turn your computer on and off three times. While booting, make sure you turn off the PC when you see the Windows logo. After the 3rd time, Windows 10 will boot into diagnostics mode. Click Advanced options when the recovery screen appears.
If your computer is not even booting or straight up showing a black screen then you will have to use Windows 10 installation media to fix the boot error.
Insert the Windows 10 bootable media (disc or USB drive) to the computer.
Power on your computer you’re installing Windows 10 on and wait for it to detect the USB drive.
If this doesn’t happen, reboot, this time pressing the F2, Del, Esc or other required keys to access the UEFI/BIOS or boot menu.
Note: Different computers have different keys to enter the BIOS setting.
When the BIOS interface appears on the screen, Use the Arrow keys or cursor keys on the keyboard to select Boot tab.
Depending on the type of media you prefer to use to start the computer with, make the DVD or USB drive the primary bootable device
Press F10 then press Enter to save the configuration and to restart the PC.
During the restart, when prompted, press any key on your keyboard to boot the computer with the bootable media.
On the first window, select your preferred language, time & currency format, and keyboard layout and click Next.
On the next window, click Repair your computer in the lower-left corner.
From the Choose an option window, click Troubleshoot.
Click Advanced options from the Troubleshoot window.
When the Advanced options window opens, click on Command Prompt.
- Once you have the command prompt up on the screen, you can start typing and executing the commands to find and resolve issues that might be preventing your computer from booting.
- bootrec /fixmbr
This command will attempt to repair any corruption issues with the master boot record.
- bootrec /fixboot
- This command will attempt to write a new boot sector on the hard disk if Windows detects damage issues
- bootrec /rebuildbcd
This command will attempt scanning all disk for windows installations.
If bootrec /RebuildBcd does not work, then run the BOOTREC /RebuildBcd command again. Here is how you do it.
Type each command then hit <Enter>:
- bcdedit /export C:\BCD_Backup
- attrib bcd -h -r -s
- ren c:\boot\bcd bcd.old
- bootrec /RebuildBcd
Another option if you are dual booting with older versions of Windows such as Windows 7 or Windows 8
This ScanOS command can find and restore entries for older versions of Windows.
- After you are done troubleshooting, you can either type EXIT in the command window itself and press Enter, or click the Close button in the top-right corner to exit Command Prompt.
- Back on the Choose an option window, Tap Continue to boot to Windows 10 normally. Or, you can also click the Turn off your PC option if you wish to power off the computer and restart it any time later.
- Bootrec /fixboot Access is denied