wtb 17mm 12v boost drivers

need too find boost drivers for sale or someone too fix my mountain max17mm

Are you talking about the MTN Electronics driver? Have you tried to reach them to repair it?
I don’t know about other 17m boost but maybe they are out there.

Check this thread maybe: >> Homemade Gxb172 led driver (complete!) (i didn’t search much to see if it fits your 12V requirements, though)