Hello,I was following the PDMG 737 Tutorial and around the end of the route, I got to change ALT/SPD on a specific leg of my route. But at the time I made a click on the button to set new FL/SPD, I got FS Black screen then the "Crash" message of Windows and auto-restart...I tried to set-up again the same route and tried to change the FL and SPD and this time I got no crash (but I wasn't "en route" so I don't think I can say this will not crash again.Is this can be related to the VNAV ALT option I checked AFTER making the set-up of my flight plan ?Note that I use :737 both 600-700/800-900 version with model update and 747-400 and 400F with updates too.Thanks for your answer !

May not be of much help, but what other programs are you running while FS is going? Antivirus, HP monitoring tools... things of that nature?Bretthttp://www.precisionmanuals.com/images/forum/800driver.jpg

I was having MSN on back, Foxit Reader (a clone of acrobat reader but who need less memory) for AIP and SID/STAR cards, and finally I think Firefox itself for routefinder and CFMU (Eurocontrol flight plan util) for my flightplan.Almost all not needed services stopped in Windows.