I cloned Windows 10 from a HDD Partiton into an SSD Partition. The SSD has 2 Partitions: one (1st) is Windows 7 (manually installed) and the other is the cloned Windows 10 from previous HDD. I created the entry in Boot Menu, transfered the Boot Menu to SSD onto Win 7 Partition. Computer boots, a Win7 styled menu appears (black menu with multiple OS choices). I can select any but Windows 10 does not procede to the User Login even if it loads, just a black screen appears and a responsive cursor with loading style. The computer experiences high CPU load. I have created a Windows 10 bootable stick. But this one does not have a Repair Menu just to install a new copy.
Edit: Converted the old style Bootmenu to the Windows 10 bootmenu which gives an option to troubleshoot Windows 10.