The Selected boot device is failed..Press Enter to continue

[Sai_Manoj_Varma]

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Well Recently I tried to dual boot my pc with ubuntu-18.04.5 with live usb..after all the required installation is over..

I entered into windows boot manager by clicking f11 key when startup and clicked "use a device" and opted for ubuntu and entered..but then there's a error

The selected boot device is failed.Press Enter to continue...

I tried many ways to rectify it

Some of them are

1.Opened command prompt as an admin and tried to fixboot but not done..Moreover "access denied" msg is coming.

2.Tried to reinstall ubuntu by uninstalling it(completely) ..did it multiple times..there is no use The same error is arising

3.Moreover I  changed the bios settings and tried to boot into ubuntu..then also the same error is coming

4.I also entered into ubuntu through live usb and conducted boot repairs with certain set of commands..but still the issue is not resolved

4.And finally I got to know(from some experts) that some of my boot files are corrupted and tried to rectify it by typing a command <sfc/scannow> the output is said that the files are repaired and thus tried again to boot into ubuntu ..then also there is no use...

These are all very brief of my efforts..I wasted much of my time for this issue..but still I haven't got a solution....I would request the experts to look into this issue and help me dual boot with windows and ubuntu->..as it was a mandatory job for me

Please help me resolve this issue..Thanks

[WAWood]

@Sai_Manoj_Varma 

I'm sorry, but HP only warranties their PCs for usage with the OS that comes preinstalled.

IF you replace that with a Linux distro, or add a Linux distro, then you assume full responsibility for maintaining that -- including solving any problems with booting the other OS and/or installing the other OS.

Modern PCs with UEFI, instead of the older BIOS, are especially difficult to install because you have to go into the UEFI settings and make several changes before you can even boot from a USB stick -- and we are unable to assist in that work.

Your best bet for support now is to contact the support forum of the distro you are using.

[Sai_Manoj_Varma]

Firstly thanks for your kind reply sir..

The thing is that I agree that hp warranties only with pre-installed os..but the main problem lies in it only..as per my knowledge I.e...The error that arised was due to the existing windows boot files only..as far as I am concerned my view is  the boot file is corrupted( .which is a part of pre-installed os)...So I think this issue can be resolved with your expert advices..in this forum only

So once consider my point and look into this issue as its correction is top most priority for me at present

Thanks