Like it already says in subject, how can I change contrast in Inspiron 1564?
I can find only keys to change brightness of the screen, but I haven't found a way to change contrast. Screen is all screwed up with factory values, but there's no information in manual how to change contrast.
You can not change the contrast with an LCD screen. Contrast is the quality of the black level, and is built into the screen. You get what you see! Cheaper panels will have poorer contrast.
XPS M1530, 2.0 Ghz Core 2 Duo T7250, 4 GB 667 Mhz RAM, 200 GB 7200 RPM Hard Drive, Nvidia M8600GT Video - 314.07 Driver, Hi Def LCD - 1680x1050, Windows 8.1 Pro 32-bit
Inspiron E1705, 2.0 Ghz Core 2 Duo T7200, 2 GB 667 Mhz RAM, 160 GB 5400 RPM Hard Drive, Nvidia 7900 GS Video - 179.48 Driver - 1920x1200 - WUXGA, Windows 8 Pro 32-bit
Dimension 9100, i-630 P4 with HT, 3 GB RAM, 160+320 GB 7200 RPM, Nvidia 6800, Windows 8.1 Pro 32 bit
Inspiron 660, 3.0 Ghz i5.-3330, 8GB 1600Mhz UDimm DDR3, 2+1 TB Hard Drives, Nvidia GT 620 - 314.07 Driver, Windows 8 Home - 64 bit.