for your VAIO? Just let me know which device is showing a yellow exclamation mark! Sony Vaio VPCEH25EN function keys not working - Super User 01-Dec-2013 —
One of the most common frustrations with VAIO laptops is "broken" function keys (brightness, volume). This usually isn't a hardware failure; it’s a driver sequence issue. To get your hotkeys working, follow this specific order: Sony Shared Library: Sony Vaio Vpceh25en Drivers For Windows 7 64 Bit
Always store a backup of your working drivers on an external USB drive or cloud storage. If you reinstall Windows again in the future, you’ll save hours of searching. For enthusiasts, consider also updating your hard drive to a SATA SSD and maxing out the RAM to 8GB—but to enable AHCI mode. for your VAIO
first. Note that Sony has limited some downloads for older models. Driver Repositories: Sites like Driver Scape DriverIdentifier This usually isn't a hardware failure; it’s a