I recently built a new computer for the better performance of FSX, thus I reinstalled PMDG 737NGX 800-900 base package.

 

Whenever I reached the cruise altitude, somehow, "Autofail" light was illuminated along with Altitude was cancelled with sign "--------."

I searched the support forum, and I found that it could be "pack" switches failed to set as "auto" and I made sure that all pack switches were properly set, but no success. The same problem.

 

Thus I decided to exactly follow Tutorial #1, which began with "Default" way without changing any overhead setting, but I found the same problem. Before reaching FL250, I had "Autofail" indicator on, then eventually autopilot system became out of control.

 

I assure you that I did all the best I could, but it seems that it would be something else beside "pack" switches. I would greatly appreciate any suggestion on this matter.

 

I have attached the screenshots for your information.

 

Here is the specification of my computer.

 

Intel i7-4770 3.5GHZ 4th Gen

EVGA GTX 780 3GB with Nvidia 327.23 driver (newest)

Memory 32GB

Tripple2Go Digital Edition connected with three monitors. (Resolution 3840 x 1024, 60HZ)

Windows 7 64bit

 

- Hardware

Saitek Cessna Yoke,

Saitek Cessna Trim wheel,

Saitek Cessna Rudder

CH Throttle Quadrant

VRsim M-panel

GoFlight Modules with Goflight PMDG Interface

 

- Addons

REX Plus with Overdrive

Orbx FTX Global

OPUS FSX (Only Weather)

GSX

AccuSim v2

GoFlight PMDG Interface

 

Thank you for your attention.

I have finally resolved this problem. You can find the resolution on the following link:

http://forum.avsim.net/topic/389902-semi-unresponsive-plane/