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HP ENVY 15-w102ns
Microsoft Windows 10 (64-bit)

I had an issue starting up windows. I suspect it was due to sudden appearance of adds in my screen while in the internet...

I tried restoring the system, after backing up the security files as show in the message.

While restoring windows, and after formating, the computer frozen for several hours (7hours) and I decided to shut down and see if it would continue...IT DID NOT, and now I have a black screen with follwoing message:

Boot Device Not Found

Please install an operating system on your hard disk.

Hard Disk (3F0)

F2 System Diagnostics  (I did that for all components and all passed)

 

Please assist...as I am out of warranty and I did not receive and recovery disk (Windows) from the manufacture.

Thank you

LCL

Know Safety, No Pain
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