could anyone help me with this problem?

hello to all Sim Fliers. the problem that i'm having is that everytime i'm flying, just started or in the air flying to my destination, when i pan to an outside view or cycle through views using the W key. when i am back in the cockpit all my gauges and instruments are all gone. no matter what plane i'm using. if i use the ones that comes with the MS2004 or the ones i've downloaded from Avsim. i've tried uninstalling the program and reinstalling it. i've change my screen setting from 1040 x 768 to 800 x 600. still no change. the system i have is....AMD 2800, 120gig HD, 1gig MEM, NVidia 256 Gainward Video Card, CH Product Yoke, CH Product USB Rudder Pedals, and CH Product Throttle Quadrant. anyone and everyone please help me with this problem. thank you much