Windows 7 on a Vaio requires the and Sony Notebook Utilities . Without these:
Use these only for original Sony drivers (not “driver updater” tools): Sony Vaio Pcg 81212m Windows7 Drivers Download
Flip the laptop over. Look for the full model number: may appear on a sticker, sometimes alongside a commercial name (e.g., “Vaio VPC-SB” series). Drivers depend on the precise sub-model. Windows 7 on a Vaio requires the and Sony Notebook Utilities