remove "Windows 7 old" from bootmenu using msconfig
And do what I asked you to do in #58
Do you have an Windows 7 repair disk or Windows 7 installation dvd? If not create one. System Repair Disc - Create
Now boot from dvd and do startup repair 3 times with reboots in between. Startup Repair
This will adjust bootmenu and makes F8 "repair your computer" functionality active again.
remove "Windows 7 old" from bootmenu using msconfig if startup repair did add it
Still waiting for screenshot of disk management from Windows 7 new (after registry tricks and reboot)