Hi I using a Gigabyte GA-F2a88xM-D3H MATX mobo, I cleaned my HD 7870 up put new thermal paste after I reinserted it it worked fine till my PC crashed I cleaned some extra thermal paste off the inside of the card but now my motherboard will not post, fans and everything come on but no post, I have tried to clean up all the dust off of it, replace CMOS battery and clear CMOS, bootin g with no GPU and ram, but still no beeps or anything.