My laptop doesn't recognize my scanner?

I have hp pavilion laptop with windows 7 and when i try to install a benq scanner it doesn't recognize it although i downloaded mirascan several times .I read in the net that windows 7 doesn't support benq scanners and when i tried troubleshooting it says the program is not compatible to the os .I downloaded another software from the net,but still have the same problem . How to make my OS recognize my scanner ??