I just made a new pc, which worked/works ok but... the inside of the case gets hot, so much so that it had a hard drive problem one time. The hard drive is mounted near the lower half of the tower. The power supply is mounted at the rear top of the tower with its own exhaust fan. I have two exhaust fan ports below the power supply for the purpose of mounting a case fan. OK, the single case fan I had was installed so that it was sucking air into the case instead of expelling the exhaust (hot air) from the case so I reversed it. Question - Should I install a second fan and have that blow the exhaust out as well, or should I install it so that it sucks air into the case? As I mentioned, both ports are next to each other (one lower than the other) with the power supply exhaust right above them... powersupply fan1 fan2 I/O slots What way is best for a fan 2?