I have recently purchased a second hand computer. There didn't seem to be anything wrong with it on purchasing, however recently I have noticed a small issue.
Any time I play sound or listen through my headphones, I can hear what seems to be the CPU working (ie when beginning a new task, there is a small crackling). Also if I tap my laptop I can hear the sound louder, as if it is being picked up by the mic and then playing that sound in real time through the speakers or headphones.
I have tried reading other topics but cannot find an answer to this question.
These are the specs I am running on;
Windows 7 Home Premium 32bit
Pentium Dual Core CPU T4300 @ 2.10Ghz 2.10Ghz
I hope someone can help me with this issue, it would be much appreciated.