If you want you can remove the non working entry from your bootmanager from the working Win7 boot manager options.
If you want you can remove the non working entry from your bootmanager from the working Win7 boot manager options.
Just use msconfig command.
Start>>Run>>msconfig. In window that opens, just go to boot option. There you can see the entries and remove the non functional one. I am attaching a screenshot
Attachment 144
Hope it helps.