My GPU wont work.

[leowonderful]

I tried listening to tons of instructions, but none work. Is there any software that could diagnose what problem I have and fix it? 

[NeuroticFish]

First of all  GPU mining for btc will is worthless.
Also mining works only on newer GPUs.
Now, make sure you have OpenCL installed.
If you bave all this  I suggest to ask in the thread of the mining software you use.

[Gladdy]

I tried listening to tons of instructions, but none work. Is there any software that could diagnose what problem I have and fix it? 

It is difficult enough to mine using ASIC miner.  Using GPU to mine does not get you much in return.  If your GPU is out, it is better to buy ASIC miner such as bitmain antminer s3 than trying to fix your GPU. ASIC miners are getting much cheaper nowaday.