This is just to give people an idea to fix simple problems with their Aluminum PowerBooks with some things I found that help out and work well. Think of this as the start to a PBG4 super Q&A! Keyboard Backlight Bleed When I first got this thing, the backlight bleed was horrendous. I think someone had tried to take the keyboard out separately and didn't apply the black shield correctly over some gaps. Solution: Electrical Tape Just apply tape over the gaps in the casing. Hot Temperatures and Loud Fans This one started when I was installing software, and thinking the speakers were making this humming sound. Turns out to be the fans spinning as fast as the little suckers could go, and you could nearly melt your legs off with the amount of heat coming off the bottom. Solution: Thermal Paste This stuff usually works wonders, and it did here too. I had one of those 20g sticks of Artic Silver 5. The stock thermal paste was pretty much baked into place, and not all that efficient for heat migrating to the heatsink. The GPU seemed to use gobs of it. WD40 takes the old stuff off like how a hot knife melts butter. Super smooth! Use a cloth to clean it up, paper towel/toilet paper make a mess. Backlight not Staying Lit When You Want it To This bugged me as the PowerBooks are not as nice when it comes to keyboard backlighting settings. I would want the keyboard to stay lit at 100% however it would dim, and if I adjust it, the ambient light sensors would re-adjust it. The only other option would to put tape either over the sensors themselves or over the speakers, which I don't want to do. Solution: Lab Tick This program overrides the settings, and you can make the keyboard brightness 100% or 90% or anything like that, at 12pm or 3am. This program prevents the ambient sensor from re-adjusting to whatever it likes. Will update with more pictures and resize them down soon If you have some tricks/tips be sure to share!