As the title says,Windows Vista SP 2 will not boot on a Dell Inspiron desktop computer. As Vista is going out of service in a few days, a friend asked me to upgrade the system to Windows 10. Stupidly and regretfully I did NOT perform a system backup. (BTW however, I have installed a minimal Windows 10 on another hard drive on this same computer and it works fine, which should prove that the hardware is OK.)
Specs are:Pentium CPU, 3GB RAM, 500 GB hard drive of which about 300 GB are reported to be free.
I have tried every possible technique I could find to attempt to repair it, including running Startup Repair and attemping to roll back to a previous Restore Point,attempting to boot into SAFE mode, and from the Windows Vista Repair Disc running bootrec.exe /FIXMBR, bootrec.exe /FIXBOOT, as well as CHKDSK /F /X C: from the command line.
After the computer is turned on, the green and black Microsoft Corporation logo comes up and runs for some time, before giving up and going to Startup Repair. (This has been tried numerous times).
By the way, I am a retired computer support professional with experience with various versions of UNIX, as well as experience with Windows 10, Windows 7, Windows XP, Mac OS X, mainframes, etc. I am comfortable working from the command line and with scripting etc.
I would appreciate help in getting the system to boot. Thanks.