I purchased a new computer a few months back. I'm running Win 7 on a i7 system. I reinstalled FS9 and I now experience intermittent system freezes on final approach. It happens about 25-30% of the flights, at different airports using different aircraft. The screen freezes, sound continues, but the is no control response at all. I'm not sure how to trouble shoot the problem. I've thought about uninstalling the software and starting the install over again, but I hate to do that work if it doesn't fix the problem, or if there is a simple change I might try first.I have turned off hyper-threading. I have plenty of RAM and video memory available. I have the current video drivers at the time of the purchase (Jan 2011) and have not updated since. There have been no other odd freeze problems on the system, FSX runs okay with no freezing issues at all. I just prefer FS9 for certain flights and because of owned add-ons. I use both versions.Can anyone suggest other possible solutions I might try? I'll consider any solution prior to performing a complete reinstall, which may not fix the problem anyway. I'm open to all suggestions.Thanks ...

I have the current video drivers at the time of the purchase (Jan 2011) and have not updated since.

This may be your answer . . . try updating.When the sound continues but FS freezes, this usually a PC related issue and not Flight Simulator in itself even though instinct tells you otherwise.John

I had that problem when I tried to run FS Force to get the force feedback working on my joystick on Win7 64. I had to uninstall that software to cure the problem. Mine would also freeze during takeoff, going from taxiway, to the runway. A few more suggestions: video card driverssystem over heatingWindow 7 power management settingsAs a last resort, update to the latest BIOS <--this worked for me with another fs9 freezing problemKJ

Thanks guys ... I am running FS Force, so I'll try shutting it down and see if that helps. The BIOS is current, but the video drivers may have a newer version ... I'll update.

Yup, sounds like outdated software problem. I had FSForce striking my flight simulator down as well. Updating the video drivers and my joystick drivers sorted that out. Random freezes in flight simulator is usually the result from bad registry files. Something is interrupting with your simulator. Did you try getting information from Windows 7 Event Viewer ? It should tell you what exactly is causing the freeze.Hope this helps. Cheers,Karan