RE: Very low sound from internal Mic, Inspiron 15R SE
Hello. Do you have the mic level up all the way, and the mic boost on? Something like in the screen shot here, except that yours should say "Conexant" not "IDT".
For testing purposes, use Windows Sound Recorder, not Skype. If it works in WSR then there is something wrong with your Skype configuration. If it does not work in WSR then there is possibly a hardware failure of the mic, in which case you should contact tech support for repair if you are still under warranty.
Jim Coates -- 15 years on the Dell Laptop Audio boards -- since 2/6/04