
Originally Posted by
Isiolia
LCDs are a fixed pixel dimension. For example, a 17" LCD is usually a fixed 1280x1024 pixels, referred to as its "native resolution". Anything other than an LCDs native resolution can be displayed in one of two ways:
- It can be scaled (in hardware) to fit. Generally this means pixel doubling and things, and tends to not look as sharp as the actual native resolution.
- It can simple be displayed in the appropriate amount of pixels, with the rest not being used. This results in black borders around the picture that is displayed.
(apologies if this is stuff you already knew)
What it sounds like to me is that your laptop's LCD scaling got turned off, or otherwise screwed up. For many laptops, this can be toggled in the BIOS. Dell usually is F2 at startup to enter that.
Some video drivers also have an option to scale video in the driver, or to let it be done by the LCD hardware. So that may be something to check as well.