I just opened up my MB. One thing I noticed is that the piece of foil connecting the optical drive to the fan has a tear in it. The tear is about 3/4 inch and runs parallel to the wires that appear to connect the hard drive to the optical drive. What is the likely hood that that could cause a problem? What kind of problems might it cause (if any)? I'm trying to figure out why my internet isn't working. I ran the hardware tests, reformatted, tried the SMC reset and still nothing. I can connect to some wireless networks, but a lot won't connect. I can't connect to the internet wirelessly or wired. Any suggestions of what to look for inside? I'll post pictures if anyone wants to see.