Dark bottom half of screen and dark patch in corner

There is no way to know for sure without taking it apart, but chances are its bad lamp strips, I'd say 9 out of 10 chance of lamps

This can be normal, it depends on your computer screen. You can adjust pictures on computer using a software like photoshop or similar.

Replace the LED back lights strips.

check the power setting in your system on the right side task bar. where u ll find it. change the setting of that power consumption thn chk it out.!!!

Thin screen LCD monitor brightness controls operate several fluorescent lamps called "backlights" that are positioned behind the LCD display. Typically, they're located around the edges of the screen - sometimes just at the top and bottom, and other times at the left and right edges and others still at all 4 edges.


Fluorescent "backlight" lamp, inverter & connection wiring.

The lamps are miniature versions of those sold in stores. They require a support circuitry called an inverter that convert & boosts the level of DC to AC voltage performing the functions of a ballast in a traditional fluorescent fixture.

The reason a part of your screen remains dark is because one or more of the components in the picture above has failed and will not allow the lamp to shine. Replacement lamps and inverters aren't expensive - but requires patience and the ability to disassemble / assemble the monitor (which is usually harder to do than it appears) and solder. They are available various lengths and color temperatures (you must get a lamp that is identical or it will be noticed). If this is a new monitor - you ought to return it for replacement. If used, consider the cost of purchasing a replacement (new or used) vs. repair.

I hope this helps & good luck!

the screen should be replaced

It sounds like a back-light problem. Check all the CCFL back-lights.

Check its back light CCFL lam of that side, which look darker. Replace it.

no u cannot do anything on ur own u need to call an expert,