My system is set to go to screensaving mode in case of inactivity - and it's password protected. I use it as security measure against my children, who can be too curious sometimes.

It wasn't any problem before Win8, as Windows detected running application and didn't go to screensavers if I am playing. Unfortunately, now, with Win 8 and 8.1 already, my system _always_ go to saving mode, if I am doesn't touch mouse/keyboard for set time.

Well, it isn't a big problem in most cases. But almost (if not every) full-screen games _are_ problems. Some of them seems can handle this switching, crashing only occasionally, but some - including Legendary Heroes - cannot.

Every time when I accidentally leave game in full screen, and go away, it will crash with "Invalid DX call" upon my return.

It's easily fixed with "window" mode - in LH too - but not in fullscreen.

Can it be fixed somehow, please?