I have been having a problem lately that I can't seem to find a solution to in Google searches. Mostly because I can't find a decent keyword to describe it.
The problem happens when I change context from one application to another, but only very intermittently. Normally I use Alt-Tab to change context, either by just repeatedly hitting the Tab with the Alt down or sometimes I use the small images of each process Windows displays and click on one with the mouse. Sometimes I even just click on a visible part of a window that does not have focus. When the problem happens the screen will flash black for an instant to maybe two seconds and then switch me to the other app. But now all the stored images of the apps used for the Alt-Tab display are gone and instead show the app icon in the small window image. When the Alt-Tab app images are gone, so are the app images that show when you mouse over the task bar icons.
I have found some mentions of other problems, especially with games when I search, but not this particular bug. It almost seems like a memory or resource problem, but I have 16 GB and am only using typically 10-12 at any given time. I usually run all three browsers, IE, Firefox and Chrome at the same time along with an email program (Eudora) and Thunderbird for newsgroups. LibreOffice is also usually running.
How might I find some mention of this problem? I am stumped on what to search for.