On most HP's you can tap the Esc key during the boot in order to get to the boot menu.
Then, tapping F2 should get you to the built in HP diagnostics. Run them.
Then, if they all pass (or you can't get to them), tapping the F11 key during the boot should help you to get to the recovery partition.
Then you should be able to wipe the hard drive and reinstall Windows.
You will lose everything by doing that.
This presumes that there's no hardware problems (since you can't do the diagnostics)
Beyond that, if you can't do that, then I'd suggest taking it to a shop.
Get an estimate first, but they may be able to do what you want with a minimum of fuss.
Edited by usasma, 11 January 2017 - 02:47 PM.
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