About this tag
The vgn-cs120j is a Sony Vaio laptop model originally shipped with Windows Vista Home Premium. Users who upgrade this model to Windows 7 often report that the Fn keys and touch sensor AV control keys stop working. This is a known compatibility issue where the original Sony drivers and utilities for the vgn-cs120j do not function correctly under Windows 7. Troubleshooting typically involves locating and installing the correct Windows 7-compatible drivers and Sony software for the vgn-cs120j, particularly for the keyboard, touch sensor, and function keys.
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    Windows 7 Av mode and fn keys not working in vaio vgn-cs120j please help

    PLEASE HELP i have a vaio vgn-cs120j with windows vista home premium preinstalled on it everything was working fine but when i installed windows 7 on it the fn and touch sensor av control keys are not working please help