What steps should I take to fix the issues my computer faces?

[Eleokapi]

My computer suffered a minor fall, about a foot or so. After I picked it up, they keyboard, mouse, and touchscreen all failed to function. The only button that works is the power button. I am stuck on the initial screen, which displays the correct time, battery amount, and connection. I have been able to reach the advanced repair menu, however I am unabke to navigate or utilize it. What steps should I take to be able to use my computer again?

[Echo_Lake]

@Eleokapi

Thank you for posting on HP Support Community.
 

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  
Hard Reset: Follow steps from the link: https://hp.care/2GnkMa8. (Refer to the removable and sealed battery)
BIOS default:(do not skip any troubleshooting steps even if you feel steps are repeating)

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and    Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer. 

Hope this helps! Keep me posted for further assistance.
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