First I’ll say, if you aren’t able to boot a windows installer off of a flash drive (and nothing’s wrong with your flash drive and you created it without errors and there isn’t a setting in bios preventing you from booting it like disabled USB boot) then it could be a hardware issue that Linux won’t fix (it’s not clear how you tried to reinstall windows). But if you’re able to get to the windows logo or the menu for safe mode then it sounds like it “POSTs” (gets past showing the bios screen) and windows should be reinstallable. In short, I think it’s unlikely to be a problem that only Linux can fix if you want to stick with windows.

That said, if you are otherwise interested in trying Linux and create a USB installer, most will allow you to exit the installer or choose to go into a temporary “live desktop” where nothing is saved, so it’s a good opportunity to try out how that distro feels to use - just don’t save anything important. And if you do end up installing either OS, you can use that “live mode” to use programs to back up any files from your main hard drive to another plugged in drive.