The drive itself may have totally failed, in which case, the process to
attempt Reinstall from Internet, may not work. ~ While the Recovery
partition exists, usually that may be used to restore working macOS.
A mac with failed hard drive, and internet access, can usually go to
online macOS Utilities; this can useful to reformat replacement HD.
Have you been able to start in macOS Utilities to see Drive status? IF
you see internal storage drive? Was Mac in question, running Catalina?
If the drive appears in left hand view within Disk Utilities, or other app
what does it say? ~ What is main volume shown there??
When you tried the various suggested steps covered in Article, exactly
what was reaction from Mac? ~ If done correctly, some reaction should
be evident. (Even if the hard drive has Failed: internet recovery would
seek, or try to fix failed hard drive.) Some users have post a Screenshot.
If your Mac has Catalina, (or back to El Capitan) Mac OS X instructions work.
• About macOS Recovery - Apple Support
https://support.apple.com/en-us/HT201314
After restart in macOS Recovery; several items can be done.
Use Disk Utility to repair your disk or erase your disk
Download and reinstall the Mac operating system
(+Others as indicated, from detailed steps in Article(s)..
Older article has additional startup key sequences.
To reinstall macOS from macOS recovery, 'reinstall' system files
is a probable cure; if done correctly, a restoration may be possible.
..Another avenue may be open to you, either take or arrange
to have your Mac shipped in to Apple authorized service..
• Mac Repair - Official Apple Support
https://support.apple.com/mac/repair/service
Above link shows several products/repairs, and battery costs.
• Apple Repair and Repair Status Check - Official Apple Support
https://support.apple.com/repair
While this link ^ offers service details; within certain regions, also a
"mail-in" service. Ask if they'd send you 'return parcel box' to ship it.
Not sure what's afflicting your Mac, w/ 'indefinite action' reaction now.
Good luck & happy trails!🌻
