Don't worry as I'll be glad to help, Since you have already tried most of the troubleshooting steps to resolve this issue, this sounds like hardware related issue with wireless adapter.
I would request you to reach out to our Support and our Support Engineers should be able to check the available service options in order to diagnose the computer physically. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/
Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
I would suggest performing system factory reset will put the computer back to the original factory settings in this way all corrupted and outdated software will be removed.
While doing the recovery there is an option to back up your personal files. If you have not previously done one now is a good time.
Restoring Files that were Backed Up Using HP Recovery Manager (Windows)You can also contact HP support for assistance. They can remotely access your system to help alleviate difficulties: www.hp.com/contacthp/
The HP Cloud Recovery Tool allows you to download recovery software to a USB drive. You can use the downloaded recovery image file in order to install the Windows operating system.
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