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Hi, I have PCG-K215..problem is the screen looks very dark and dull when it is run only by battery..only when it is connected to AC power the original brightness appears..also with only battery the sound is also not clear..there is some disturbance...
not able to understand whats the problem..
Help me please..
Have you changed the power settings in Control Panel? Have a look there, you must set the screen brightness to max for battery as well as AC, it drops down to save on power.
thats true about brightness but the sound seems disturbing...
might be a problem whit the battery..
Sounds like a bad battery if the sound is distorting, you should ask VAIO Link about that