For What It's Worth, FWIW
Windows 10 will not boot to a Dell VOSTRO 200. I have been an early adopter of Windows 10 and had to run the nightly builds on an old Compaq laptop. I run Win 7 on the VOSTRO and had hoped the released version of Win10 would run on the VOSTRO. It downloads fine but as soon as the update starts it dies. The VOSTRO is not certified for Win10 so that is just how things go but BEWARE... Microsoft will not transfer the Win7 license to another hardware platform so if you have an older system that is not Win10 certified running a licensed verson of Win7 you are DOA!