A:AnswerYour best bet is to buy the recovery discs from the your computer maker if you have a dell you can download it for free on a USB stick but it takes some time and patience its a bit of a learning curve as long as you have your serial number and your model number down you should be able to go to them and ask for what you need if all else fails try to download a fresh copy of windows 10 off there website and download the drivers off the computer companies website but if you have a hp you can call up the company and get the full restore discs from them yes its a bit expensive but its for future use and comes in handy for your issues or you can try pressing esc when it boots up tell a menu pops up and gives you the boot menu option or try f7 or f9 or f12 for boot menu options I have had some issues as well hope this helps you out