Gronagor wrote:"Elementary my dear Watson: You spilled your black tea all over the computer screen!"

- But Holmes... my tea cup is still full !
- Just kidding, Watson. The true reason of that black screen is... the age of the graphic card drivers !!!
- I'm impressed ! You're really a genius, Holmes !
- I know, my dear Watson, I know.
(End of the case. Hum. " The lost files of Sherlock Holmes : the case of the black screen in Quest for Glory II VGA " is really too short. I give it a 1 / 10, just for the fun, and I'm generous

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So, thanks to my brother for finding the solution - and to all of you for help - my drivers were too old, the full screen mode works perfectly now (both with QFG II and Dos Box)

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And good news for AGD team : no new bug to exterminate here

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