File compression is a feature that allows the user to decrease size of files, folders, and programs, and reduce the amount of space they use on the hard drives. However, since the system bootsector code lacks the ability to decompress files by itself, the BOOTMGR file, which is a key part of booting process, should not be compressed.
For details on how to perform a successful reset: click here
If that doesn't work: Use the HP recovery media, If you don't have an HP Recovery media and have attempted reset using the windows troubleshooter or a retail copy of windows, you'll need to order a recovery media: Click here for steps.
Or you may also attempt to download the same using the steps on this link: click here
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