Cant get 1440x900 resolution anymore

I used to have a HD 6850 but due to a component failing it no longer works

now i am using the onboard graphics (AMD 760g/ Radeon HD 3000 Series) and a resolution which i could get before and can no longer use and i am pretty sure the onboard graphics can meet 1440x900 as it can output 1080p and an extra monitor

i have installed the latest drivers, i also tried the drivers from ASUS (ASUS mobo) and it makes no difference.
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More about cant 1440x900 resolution anymore
  1. Try running "Detect Display" from Catalyst Control Center. That should recognise the monitor and allow for the resolution you want.
  2. the monitor is non-PNP, anyways i fixed it by going into the registry and adding a resolution

    for future reference:
    in CCC go to software
    note down the registry path for the 2D driver
    open regedit with admin rights
    go to registry path
    find entry "DALNonStandardModesBCD1" (BCD1 means monitor 1, BCD2 is monitor 2 etc.)
    right click on it and select modify
    in a new line type in
    14 40 09 00 00 00 00 60
    (1440 x 900 x 60Hz)

    another eg.
    19 20 10 80 00 00 00 120
    (1920 x 1080 x 120Hz)

    now go to device manager
    disable the display adapter device
    now reenable (disabling and reenabling the device removes the need to reboot)
    now go to CCC->desktop management-> advanced display settings
    select your resolution
    have fun!!!
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