I'm running Windows 10, Elements 14, and printing with a Pro 100. The prints come out much darker than the screen. It seems the only way I can get decent prints (compared to my computer screen) is a sort of trial and error exercise of increasing the brightness in Elements and hoping for the best. I don't think its my computer screen, although I could recalibrate. I downloaded the most recent driver but that doesn't seem to help. Suggestions?
What you see on your monitor can be very misleading. It sounds like you need to use a calibrated screen, both for brightness and color balance and temperature. They make systems that can help you calibrate your monitor like the ColorChecker System from X-Rite and the X-Rite ColorMunki Smile Color Calibration Solution.
Personally, i do not use it. My photo prints are not so critical that I need a monitor calibration. But, I do not rely on my eyeballs to tell me what is correct, and what is not. Most post processing software provides histogram displays of your images. I use histograms to check for brightness. I might use a custom white balance target when taking the shots, but usually not. Canon's DPP software provides you with a histogram as you make edits.
Sophisticated image processing software, like Adobe Lightroom, provide even more sophisticated indicators than histograms.