When I turn on my laptop it says reboot and select proper boot device or insert boot media in selected boot Device and press a key. I've been searching online for about 2 hours now and all of the solutions are choose hard drive in bios boot priority, yet hard drive isnt an option?? Keep in mind im on Windows 10. Also, when I first turned on my computer today it said error 00xc00007 or something, and once I restarted it, the reboot message came up please help!!!!!