I have an older Dell Inspiron about 4 years old that I was using as a TEST computer for Windows 10 (fast lane) or whatever. Recently when I turn the computer on, I see the Dell logo for a second or two, and then the blue Windows "Window" but that is it. The computer never boots up. HOWEVER, if I hold the switch down to manually shut down the computer, wait a few seconds, and then turn it back on, the computer fully boots, and all is fine. Any suggestions ? Thanks, Mike