How do I take apart my dell pc L733r so I may clean the inside?

November 16, 2009

I need to take apart my dell pc so i may clean the fan etc…I would appreciate step by step help or perhaps a diagram to help me accomplish this task…ty

I’ve got a nice Sennheiser headset, but the microphone part suddenly stopped working; how do I fix it?

July 1, 2009

All of the diagnostic software on my computer completely ignores the mic portion, which is plugged in through a separate cord. The cord is in prime condition and the headphone part works perfectly.
BTW, I’m using Windows XP on a Dell PC.
Well I tried it on another computer and it didn’t work. Do microphones usually just die like this of their own accord?