Find the missing device in :
The is a physical key (usually above the keyboard) on older Sony VAIO laptops. It boots the computer into VAIO Care (Rescue Mode) for diagnostics, recovery, or system restore. It is NOT a standard Windows driver – it relies on:
The Assist button’s function is tied to . Download VAIO Care from Sony’s support site for your model. Without VAIO Care, pressing the Assist button may still work but will open a “missing application” dialog.
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