Volvo Repair: 1994 850 turbo, torx screws, fuse box

Question
my windows and sunroof all stop working. ive checked the fuses that i could find where else could i look besides under hood.  also while idleing black smoke comes out and appears to be soot spitting out with black smoke out of tailpipe. please help

Answer
Corey, remove the cover to the fuse box by taking out the 4 torx screws.   There is  fuse that cant be seen. Thats the window and roof fuse.  You probably have an issue with the window switches causing the fuse to blow.  The blow smoke can be anything.  Most likely its a air massmeter.  Any Check engine light?  Roger