Today I decided to clean my MacBook (early 2008) since it had been a couple years since I cleaned under the top (by cleaning I mean blowing the dust away). I have done this couple times before and having done work experience at a laptop repairer I know how extremely important to make sure everything is place correctly. Once done the computer doesn't turn on, I get concerned and check if everything was in place. After numerous times of taking the top of and on (because I have to have the battery in to see if it turns on) it does not turn. Is there anyway the ribbon cable could of been damaged through the process? I am stumped by this because I was extremely careful and now I cannot use my computer, which is a hassle for year 12. I do plan to upgrade to MacBook Pro when they update, so I am not panicking. However I wanted to re-sell it on eBay and I'm sure it will devalue it (plus can't wipe my hard-drive). So I do not want to spend money on repairing it, since my budget is tight for a new computer. I do know Apple replace cases that have cracking problems for free, which mine has a minor case of. I really want to find a solution to this problem since one month in year 12 without a computer is huge inconvience. I would greatly appreciate some advice. (I backed-up my computer last night for the first time in 400+ days, so I don't need to panic from loss of school work *jumps in happiness*) Edit: My MacBook use to randomly not recognize the trackpad and keyboard. I would have to turn my computer off and on to fix it. Would this of been a hardware issue or software (I am on latest software)? And removing the top off aggravated it and caused it to stop working?