Well the forum is full with such questions/answers. Take some time and browse. This are two good threads to start with.
https://www.crossfireforum.org/forum...ead.php?t=7277 (in this one I mentioned my problems at the bottom of page 4)
https://www.crossfireforum.org/forum...ead.php?t=7186

The most common issues are mentioned in the TSBs (Technical Service Bulletins) anyway. This part of the forum might be helpful as well: https://www.crossfireforum.org/forum...splay.php?f=66

Good luck.