screen looks darker after installing new video card

Solution
What kind of graphics card? If it's nvidia, check your nvidia control panel. If it's AMD, check whatever the equivalent of that would be. You can change brightness, gamma, contrast, etc. from there. If none of that works, then yeah, you can compensate with your monitor, but if the only change is your graphics card, then it makes sense to check the graphics card settings, right?
What kind of graphics card? If it's nvidia, check your nvidia control panel. If it's AMD, check whatever the equivalent of that would be. You can change brightness, gamma, contrast, etc. from there. If none of that works, then yeah, you can compensate with your monitor, but if the only change is your graphics card, then it makes sense to check the graphics card settings, right?
 
Solution



If it is an AMD card, open AMD Radeon Settings, you can play with the settings @poochiepiano suggests.