Windows reinstallation issue

[Krishna42]

Hi, I have tried to install windows 10 from windows 8.1 and then I have mistakenly deleted every drive data and cleaned out every volume in command prompt and then OS also got deleted and my system allocated OS space too. 

Then my laptop just developed some kind of problem just 1 day back, says boot device not found, please install an operating system, so I did a system diagnostic through f2, did a memory drive test and hard disk test and the system passed both.. However the problem still hasn't been resolved. I shutdown and restarted the system pressing f11 so that I can do a recovery but its not responding, ie, f11 isn't working...

I can't able to install OS from USB pen drive and it's saying that no bootable device has been found, please install a new operating system.. What can I do now?? 

Please help me

[WAWood]

@Krishna42 

So what were you doing, using DiskPart manually, not knowing it can remove everything on the drive if you make a mistake?

If the drive passes the diagnostics, then this is likely a boot files issue, and using another PC, you can create media to rewrite your boot files -- but you have to be able to boot from USB to do that.  If you can't boot from USB, you are stuck with what you have done.

[Krishna42]

Thanks

[Krishna42]

I have sorted out my booting error and I now getting these following couple of errors... 

File: \windows\system32\drivers\EhstorTcgDrv.sys
Error code: 0xc0000221

[WAWood · Accepted solution]

@Krishna42 

We're not a general purpose Windows errors troubleshooting outfit. 

You need to online and do searches for this error code because there are a lot of different causes and possible solutions.

[Krishna42]

Yeah, that's okay... I have reinstalled my operating system successfully 

[WAWood]

@Krishna42 

OK -- but which Windows version did you reinstall, Win8.1 or Win10?

[Krishna42]

Firstly I tried to install windows 10 it didn't work so I went back to Windows 8.1 and successfully installed it. Then I installed windows 10 

This whole thing was messy because there was no operating system presented in it as I said I have deleted it and I tried from external pen drive with Windows To Go and I was able to back it up my hard drive partition initially I couldn't able to get find it when I was booting. It took me 2 whole days to fix the entire OS solution on my own. 

Thank god 🙏