Only esc key works in a boot mode change.

[Slepdeprivedhum]

So I tried installing a Linux distro in my hp tower(I don't know the model). It was Linux mint and the options weren't showing install with windows 10. So I searched an artilcle and it said disable fast startup. So I did it. In some boots I didn't see any changes but I inserted my Linux mint usb stick and booted in it. To my suprise it booted windows 10. I didn't pay much attention and turned my pc off. My when i

 

 

turned it on again, it was at a black screen. So I panicked and started changing the boot mode. After that I screwed up and changed the boot mode back to legacy, there was a message to confirm the change. I typed in the code but only esc key works and the screen doesn't respond if I enter the code. What should I do? Any help would be appreciated.

[itsmyname]

@Slepdeprivedhum --  I inserted my Linux Mint USB stick and booted in it. To my surprise, it booted windows 10. 

Within BIOS SETUP, did you permanently change the boot-order to first boot from the USB?

Or, at power-on, did you press ESC, and then F10, to temporarily override the boot order, to do a one-time boot from the USB?

Power-off your computer. Remove the USB stick. Power-on your computer. Does it boot into Windows?

Or, what is not quick-and-simple, but will work:

1. power-off the computer
2. open it up
3. disconnect the power and data cables from the disk-drive
4. purchase a brand-new disk-drive, preferably a fast SSD (Solid State Device)
5. connect the power and data cables to the SSD
6. disconnect any Ethernet cable connected to the computer
7. power-on your computer
8. reinstall Windows, and let it complete
9. power-off your computer
10. disconnect the power and data cables from your CD/DVD device
11. connect thosee power and data cables to your "old" disk drive
12. power-on the computer
13. Windows should boot from the SSD, and should assign the "D:" drive-letter to the "old" disk-drive
14. copy all your personal files from the "old" disk-drive to the SSD
15. reconnect the Ethernet cable
16. launch Windows Update, both to "activate" Windows, and to get the latest security-updates
17. re-install all the free programs (iTunes, Adobe Reader, et cetera) that you were using

I hope this helps.  Ask, if you need any more details about the above steps.

[Slepdeprivedhum]

I didn't change the boot order in the legacy mode. Top of the boot is internal hard drive.  Also I tried removing the usb stick but it booted to a black screen. Also the esc key problem solved but one more problem remains. It just boots up into a black screen. I don't see windows logo, dots loading up, just the black screen with no cursor. I waited for like an hour but still there was a black screen. What should I do?

PS-i have a windows backup image, but it is on the e drive. Would that be useful in this situation? If yes, how can I access it?