So I have a 13" white Macbook 5,2 that i got from a family member for free. I decided to replace the old thermal paste, as the machine was running quite hot when I was using it. I made sure everything worked before i put everything back together, with one exception: the sound. I power it back on after I got it put back together, and while it booted normally, there was no boot chime. I naturally tested the sound and while it does work out of both speakers, it sounds very thin and tinny. Has anyone here had a similar experience and/or know what could be causing the issue?