Running windows 10 Version 10.0.10586 Build 10586 migrated Disk 0 ( C ) to SSD BOTH of these devices are 1 T used most basic options. Computer is a Lenovo W530. I found the change boot disk in BIOS menu using F12. It has the SSD listed as boot disk. When I select that It states that I am trying to start Window 7 ( I upgraded from 7 to 10 ) When I try to move past the page with the Windows 7 I get and error with \windows\system32\winload.exe Windows cannot verify the digital signiture for the file. I do not have a system disk for this machine. It was purchased with the windows 7 installed. HELP !!!!