It seemed I wasn't getting anywhere, so I thought I'd try to Clone my original o/s drive again this time using True Image in another Win PC so that the drive wasn't alive with the o/s operating like before. It still told me about the bad sectors and I had little hope that it worked. Anyway I made it the boot drive in bios and had it as the only drive in the box and sure enough it booted. All the pre bios stuff was still there such as the Fan Controller however it booted. The Win ,logo with the black screen, then it died and a few minutes later came back with the white text that it is fixing the partition that wasn't the one with the o/s on it. Maybe 15 minutes later it rebooted and there it was, all my original icons on the two screens ! tested it with HDSentinel and it came up as 'Perfect' and it was also okay in UserBenchmark. It updated Win to 2H1 from 1H1 and now says all updates okay.. There is still a Win problem where I cannot type into many of the Win o/s admin boxes, like Search or Settings etc. Just dead, however it is a Win problem not a disk one and I have searched to see how to fix. One happy chappy tonight!
This morning tried to boot up but.. T7500 Fan sound then 2 short soft beeps then less noise but no sign on monitors. Left for a while but no change.  Checked leads, all seem to be fine. Power light is constant green, Motherboard light is on, no other lights show.  Keyboard lights flash and on as usual. Tried to boot to USB recovery but nothing. Any ideas please?
T7500 Fan sound then 2soft beeps then less noise but no sign on monitors