When we got our HP Win 10 laptops, everything on the top row with function keys worked opposite to what was true in the past. (Arrrrgh!) For example, my best friend is F5 to refresh. To do it in Win 10, I had to do Fn+F5. Otherwise, simple F5 did something else — brightened or dimmed the screen, I think.
I don’t know if this is the issue you have, but if so, there is a way to reverse this back to normal, but I forget how. I did it by searching the web. WHY does MS always screw around with this stuff?
Print Screen functionality is not standardized. It is not directly built into the operating system and is dependent upon the manufacturer, and even sometimes the version of the operating system. Also, different combinations of shift and keys can grab various versions of 1) the currently focused application window, 2) the entire screen, 3) all scree screens if you have multiple screens. This can be frustrating.
The good news is that there are application-based alternatives - tools that will let you actively select what is grabbed, then let you save directly into a file without having to paste into another application. The tools will often let you edit - rotate, change size, ... etc.
Below is a list of free tools I quickly found with a bit of searching. I also included SnagIt, which is a tool that first appeared many years ago. It's not free, around $50, but I think well worth the price. I use it at work nearly every day. In addition to static images, you can record audio/video. I use this functionality for creating training videos during my work. I don't recommend SnagIt for editing video, as it is very crude and clumsy. Alternatives can be ofund with tools from Adobe and AVS. I don't have experience with the Adobe tool, but it comes highly recommended. The AVS suite I purchased a few years ago for $50 and I am very happy with its suite of powerful Video editing tools.
Hope this helps.
Gizmo's Freeware
Five tools evaluated by TechRadar
GreenShot
Review of several tools by LifeHacker
SnagIt by TechSmith