Hi,had to reinstall my 737 and found that the 800/900 work fine but not the 600/700Installation as follows : 8/9 with CD - 6/7 with downloaded file ( PMDG_fs9_737-600-700_setup), then service update V1-2 to V1-3.THe 8/9 are as usual - but in the 6/7 the 2D cockpit wont show ( just a black window instead of instruments - outside look OK . . . !!) and I cannotcall neither the (O)verhead nor the (T)hrottle nor the ( R )adio buttons - they wont accept any mouse clicks . . .Any ideas ?PS : all a/c worked fine for about 4 years !!

Carl,Did you delete all PMDG folders after Uninstall?Did you install the 600/700 first (with updates), this was your original setup, correct?And verify 600/700 works ok before doing 800/900?Why did you have to reinstall .. new PC or OS (like e.g. win7 64 bit?)?

Hi Vaughan,thanks for your reply.Reason to reinstall was a hick-up with the throttles - even with engines cut the horn was blowing constantly - I found no way to cut it . . .I have the FS9 on a seperate partition which I completely erased and several formatting steps thereafter - I will try to set up the small version first and check it.

Installed the 600/700 first and its running now just fineBUTnow the 800/900 brings new trouble - after rotation the RED speeed ribbon comes up and the speed will NOT increase and its going down to stall speed . . .ran a repair installation but no result !KH

On the re-installs, did you install all updates also?Previous post you mentioned:"Reason to reinstall was a hick-up with the throttles"What was the hick-up?What is your OS? New?

Hi Vaughn,Reason to reinstall was a hick-up with the throttles - even with engines cut the horn was blowing constantly - I found no way to cut it . . .OS is W7- not new all updates installed as before . . .KH

Karl,Try a quick post here:http://support.precisionmanuals.com/Main/Default.aspx