Removing openSUSE installer from Boot Manager (Unable to boot Windows at the moment)

I have a computer that is shared with another person. The main OS is Windows Vista. One day, the other person wanted to install OpenSUSE onto VMWare but he made a mistake in the process and now every time at the Boot Manager there are options:
- Microsoft Windows Vista
- OpenSUSE 11.1 installer (LOCAL)
I didn't mind it at first because I could still run Windows without issues.


Just since a few days ago, the computer suddenly refuses to boot my Windows. And I want to get rid of this OpenSUSE installer away first thing from the Boot Manager.


Is it possible to remove that OpenSUSE installer from Boot Manager without booting into the Windows OS? Perhaps through "Repair my computer"?


When I tried to search around, mostly I found that we need to remove partitions from disk management. I can't boot to Windows to perform that, however, I remember I didn't see any extra partition for OpenSUSE in the computer's disk management. I don't think OpenSUSE was even properly installed as the other person said he made a mistake before he successfully installed it on VMWare.


What should I do? Hope my explanations isn't confusing and I am not knowlegeable in this field. Your advices are greatly appreciated.