CoolerMaster Storm Trigger acting funny (Non-functional keys)

Alrighty, so I have a CM Storm Trigger, and personally I think it's a pretty decent keyboard, although it's acting really funny and has been for months, and I can't explain why.

First of all, the FN + F keys (aka Media keys) don't respond at all. It's not a driver issue, since this carries over to other computers. However, the FN keys work fine by themselves, and so do the F## keys. 

Another issue is, in the middle of games the D key loses functionality, and becomes responsive roughly 50-65% of the time. I checked the PCB, and the connections are fine, and it only happens in game. 


I'm also fairly certain this keyboard is out of warranty, and even if it wasn't I wouldn't have anything I could use while I have it sent in. So, does anybody have any ideas as to what might be the cause?