stealth77

Good news now my FSX is running smoothly. At last I flied the PMDG 747 for a 2 hours flight and everything runs perfectly.I don't know which one actually fixed the fsx because I did several things before the flight.1. I installed the latest audio driver for my motherboard2. I installed the latest directx3. I reinstalled my fsx to a non default windows directory ( mine is local drive/fsx )4. I switched the DX to directx 10 and set the fps to unlimited.Hope this helpsCan't wait to jump in the cockpit againThanks for the help guys

OK Sir I will try that. I am going to open the side panel and add more fan.But the strange thing is everything's okay when I am preparing the flight on the ground.10-20 minutes airborne the FSX always crashes.I am running default scenery and I am currently planning on buying REX 2.0.Anyway thanks for the input.I will try to add more fans now.

I have the exact same problem. When on the ground everything's fine.But 10-20 minutes airborne suddenly the fsx freeze and "fatar error" window pops up.I am currently running my fsx onAMD Phenom X6 1055T 2.8 Ghz2x2GB DDR3 @1066Sapphire 6950Windows 7 Ultimate 64bitMind you I dont even set the setting to ultra high. Just medium high.I've tried back up and removing the uiautomationcore.dll from the system32 folder but still the fsx freeze and crashed.Btw I was using PMDG 747-8 or 737NGX when those crash happened.Please enlighten me. What's wrong with my fsx?anyway thanks in advance