Brightness, contrast calibration of LCD monitor with OSD adjustment is not recommendable.
You need to reset the monitor to factory default setting before using calibration tool to adjust the profile.
For precise calibration on all aspects of display like RGB output property, colour temp (white point), gamma adjustment, luminance, etc, you'll need a monitor calibration tool like Spider. Below is to self test whether your monitor properly displays shadow and highlight or not:
Steps needed for a proper test:Disable 'monitor power off' from the PC power management option.
Select Factory Reset from the monitor OSD menu.
Return all settings of GFX driver to Default.
Don't use Natural color or Adobe Gamma or any other monitor color related programs.
Do the following test in 30 minutes later at least after turning on the monitor.
1. Shadow detail test.If you can't see all the numbers from 1 to 10 in below black box, your monitor is either too dark or light source around your monitor is too bright.
This black box test shows how well your monitor setting displays dark details.
You may do the checking from opening the black chart from Photoshop for clearer analysis.
2. 50% Grey test.You must be able to see -5 up to -1, 1 to 5.
3. Highlight detail test.You must be able to read all numbers from 1 to 10.
4. Colour test.Provided your monitor displays colours properly, the top line colours should be seen as Red, Yellow, Green, Cyan, Blue, Magenta.
The second line is slightly darker tones of the same colours.
The bottom line is from black to while Grey scale chart. They must be seen as pure Grey (achromatic) with no other tones mixed.
Standard Gamma and colour temp for accurate photo image observation is 2.2. and 6500k.
Hope this helps a bit.