OK. Thanks for your help anyhow. I think I agree with you about all in ones. We had a specific reason for getting one but maybe there are some drawbacks to it.

Any suggestion on what to do next?

Things seem to be going from bad to worse. I put in the old drive and when I turned on the computer the screen was black. No cursor or anything. The light indicator for the hard drive seemed to...

When I boot with the Seatool DOS CD The drive runs and the Lenovo screen comes up but after 5 minutes the computer restarts and the process repeats. Without the CD in the drive, I still get windows...

So I should run Seatools for DOS, not for windows?

No, should I do that?

I unplugged the wireless receiver and restarted. Same result. The welcome screen was up for about 3 minutes and then a message box shows saying windows ran into a problem and needs to restart.

Just a wireless keyboard and mouse.

No error code or anything. Only to close any open programs and it would restart in one minute. It keeps looping and now I notice it isn't giving any message before restarting.

I ran the Macrium Reflect to fix boot problems. It ran and repaired the BCD (the 3 other repair options weren't available). After running I rebooted and I get through the Windows sign-in page but...

Not sure how to do this. If I create rescue media on another pc, won't it contain drivers for the other pc and not the one I am trying to fix?

This is what the old (original clone) disk has:
C - 500mb OEM Partition
D - 905 GB Primary partition
F - 1000MB Recovery partition
no letter - 260MB EFI system partition
G - 24GB Recovery...

I am not sure. The computer came with these partitions set up. I have the old disk that I cloned. Could I find something out from that?

This is what I got.

I was typing the command prompts improperly and managed to run the following:
Trouble Shoot -> Advanced Options -> Command Prompt

CMD> bootrec /scanos
CMD> bootrec...

I was able to get a flash drive with repair media off another windows 10 computer I have. I opened command prompt and input CMD> bootrec /scanos. I then hit return and typed CMD> bootrec...

I don't have a windows 8 recovery disk. Not sure how to get one. I do have my old hard drive (which is still working) and a SATA-USB connector. Would that help? Also, I have an external backup...

My Lenovo PC suddenly shut down today and when I restarted it I got a BSOD with a 'bad pool header' message. I did eventually restart but soon shut down again with a 'k mode exception not handled'...

I disabled the driver verifier and updated the drivers for the chipset, bluetooth and Altheros network adapter.

I restarted the computer and everything worked normally. Perhaps that solved it!

My computer seems to run fine but whenever I shut it down or restart it the screen goes black for about 10 minutes and then I get a blue screen with a driver power state failure. The system files...