Can't take ingame screenshot COD2

[Mitch]

I can only take a screenshot on the biggest possible resolution, but then I have 60 fps which is unplayable.

Which compatibility mode is CoD2 using? Windows XP SP2

I'm using Windows XP SP3 (Win 10 ofc) and on 1920x1080 (max) I can make screenshot.
But on any other resolution I can't.

It is a Windows 10 compatibility issue.

You have these options:

• You can't use the screenshot function (from CoD2).
  A third party application might work (Steam or kubislav23's suggestion: Fraps).
• Play using your maximum resolution or desktop's resolution.
• Play without compatibility mode (~30s blackscreen).
• Change your desktop's resolution to your CoD2 resolution before playing.