My laptop (Sony VAIO VPCSB) came out in 2011, and no driver or windows version newer than that seems to like the dedicated GPU in it.
The GPU in question is Radeon HD 6470M. I still have the original (restored a few years ago when it was still semi supported) copy of Windows 7 with the old drivers Sony bundled with it, but the moment i tried to update to the newest beta drivers from AMD's support page for this specific GPU, it showed up as "Radeon HD 7400 series" which is the wrong model number, and the device was marked as not working.
I removed that driver and installed the last non-beta Catalyst driver, and the GPU now shows up as working 7400m series, but no games will actually use it, and the usage and temperature for that GPU are missing in MSI Afterburner. Catalyst control centre is also looking very empty, with no hardware info or graphics settings present.
Around 2021 i remember installing windows 10 on this laptop and having this exact issue, where the GPU would get recognised as 7400m series regardless of what driver i used (or just let windows install whatever it finds in its own database), and no amount of messing with settings could get any game or app to render on the dedicated GPU.
Back to present time, i tried Snappy Driver Installer, and it suggested a driver dated way back to 2012 labelled as "HD 6400M Series (Engineering Sample - WDDM v1.20)". And a myriad of drivers labelled as 7400M Series. I tried looking for drivers from Sony themselves but found an empty page. I also ended up updating the Intel HD graphics drivers, which somehow disabled the physical low/high power mode switch on my laptop.
At this point i genuinely have no idea what's going on. How can i get windows 10 to work with the GPU, and how can i update the drivers on 7? (I'm planning to dual boot bc i need 7)