You could also try to enable it manually. The directions on are the web - just Google it up.

For the most part, I don't bother with QE on PCI video cards. There is a reason it is disabled by default - it requires a lot of PCI bandwidth, and that can be detrimental to overall system performance and stability.

In fact, I have yet to find a situation where QE has enhanced my productivity or made it easier to use my Mac...

Peace,

Drew