Sometimes requests go un-answered when:
1. The question may be unclear or we cannot determine what it is that you are asking for.
2: The hardware in question is unknown or inadequately described.
3. The question seems to request an answer for something that cannot be explained online adequately.
4. The Experts that are online simply don't have the resources to answer your question fully until additional information is provided.
Please feel free to re-word your question or add additional information you might feel helpful for the Experts to assist you. I don't know what your describing with "bsvcf91", eg: a video card or chipset number, a notebook pc, a desktop pc, other?