Hi All,I just started having the problem of a god-awful noise occurring in FS. It scares me half to death when it happens, but as soon as I hit alt (I use full screen mode), it stops and I can resume flying. It is sporadic and occurs with various aircraft, and the resolution doesn't seem to matter. I installed the Radeon card not too long ago, could that be it?Thanks for any help,Todd

Lock this one Tom

bump

What you may be hearing is the monitor. Try changing the refresh on your video card settings to 70mHz. I have a GF4 and get a high pitch whine occassionally if the refresh rate is off.Kevin

Thanks Kevin, I'll give that a shot.Todd