Hello all, Specs of the offender! Mid 2007 Macbook 2.0 ghz Intel C2D Mac OS X 10.6.4 2gb 667 DDR2 SDRAM (recent upgrade) 40 gb Solid State Hard Drive (recent upgrade) This is my backup computer that I use infrequently. About two weeks ago I noticed that the fan was screaming and running at a ridiculously high speed (over 6200 rpm's) only when I was watching video on justin.tv. Through reading and researching I tried a few different things. 1. smcfancontrol - no luck 2. smc reset - no luck 3. PRam Reset - no luck 4. Bought a can of compressed air and cleaned external venting. no luck 5. Replaced internal fan and cleaned enclosure with compressed air. no luck 6. Tried some of the more common things I found on the interwebs. Watching the activity monitor for anything erroneous (the only thing I notice is that the browser in use seems to be the problem), checking to see if a print job was in cue (there was none, a printer isn't even listed) no luck Here is what I have noticed. It ONLY starts flying when I am watching video on the screen (justin.tv as an example) When I minimize the screen or open up another tab in the same browser, the computer seems to slow down to a normal speed (between 1700 and 3000 rpm's). I tested this in 3 different browsers with the same result (Chrome, Safari, and Firefox). My next step was to do the Apple Hardware Test and guess what? My superdrive is bad...Boo Is there a way to run the AHT without a cd? What am I missing here? Is this a software error? Is it a temperature sensor? Can I replace them myself? Should I go straight to replacing the logic board? I realize I am a noob to macrumors, but this computer was my late younger brothers and I am determined to keep this computer running for as long as Apple has parts floating around. This isn't just a backup computer to me, this is a piece of my brothers history. Thanks for all of your suggestions/help in advance!