Sony VAIO Laptop Screen Dims

[LAR]

Hi,

I've got a Sony VAIO PCG-K315M laptop. The screen looks ok and normal at the VAIO splash screen and BIOS menu, but goes dim when windows XP loads. Ok with external monitor.

Unfortunately, it's now 2 months out of warrenty!

I was suspecting the backlight or the Inverter or even a loose cable connection, but can it be any of these if the screen looks ok before WinXP loads? Could it be a 'loading' effect on the backlight or Inverter when WinXP starts to load?

Thanks for any help.


Mod Edit - Tsk, tsk....cross posting the same thread across multiple forums is not only bad manners, it's against the rules. Here's a link to your other thread in "Mobile Computing" which is the appropriate place for laptop questions. Thanks - BlindedByScience

 

[Zardoz]

Sounds like a gamma or some setting that you have in the Display Properties that ajuests your display as windows xp boots.

 

[LAR]

I thought it was a display setting of some kind, so I did a system restore, but it's still the same.

 

[oC|-TiTaN]

could happen because the last time the laptop was on it was plugged into AC power (which usually leaves brightness at full in the power settings) and once it detects it is running off of the battery it dims to the default battery brightness setting. try going into the laptop power settings and changing the battery profile to have full brightness and see what happens.