Boot error

Hi, F8 is deprecated in Win 10- not enabled by default.

The error message may indicate a corrupted boot sector or difficulty communicating with your disk.

Please complete your system specs. (See mine for comparison).

At present we haven't a clue if it's a laptop/desktop/HDD/SSHD/SSD or even a tablet...

History: Could you tell me what happened between when your PC was last working, and now?
E.g.
-the dog chewed through the power cord and the PC suddenly went off
-my little brother pushed my laptop off the table
-it was fine yesterday, but when I switched it on today...
etc.

Please download and create Kyhi's bootable disk from the top of the Software and Apps section.
(You can use a DVD or USB drive).

Make sure your BiOS is configured to boot first from your chosen device.

Boot your PC from that disk, and you should see the desktop shown where you downloaded the iso.

Now run HDTune to check your disk and post the result.

If ok, run Macrium Reflect.
Macrium Reflect is also on that disk, and has a useful means of attempting to correct boot problems.
Fixing Windows boot problems - KnowledgeBase v7 - Macrium Reflect Knowledgebase - KnowledgeBase v7 - Macrium Reflect Knowledgebase

Try that and check it succeeds.

If so, remove Kyhi's disk and try rebooting your PC