I've had some experience with older netbooks like yours, and it's always a bit of a challenge to push them beyond their limits. You're right in noticing that the Intel Graphics Media Accelerator 3150 isn't exactly the powerhouse by today's standards. Generally, the WDDM 1.0 driver is about as good as it gets for this hardware. Intel hasn't released any newer drivers for the GMA 3150, so unfortunately, you're pretty much stuck with the DirectX version support that the hardware allows, which is limited to DirectX 9.0c.
However, you can still make some tweaks to improve performance. For starters, you might want to adjust the visual effects settings in Windows to prioritize performance over appearance. You can do this by right-clicking on 'This PC', selecting 'Properties', and then navigating to 'Advanced system settings'. In the 'Performance' section, click on 'Settings' and choose 'Adjust for best performance'.
Also, keep your system lean by disabling unnecessary startup programs and consider lightweight applications for web browsing or video playback. Utilities like VLC offer more efficient video decoding and can improve playback quality slightly on less powerful machines.
Lastly, keep your system and drivers up to date within the manufacturer’s support, and always ensure you have sufficient RAM installed, as this can really make a difference in performance on older machines.
Hope this helps you get a bit more life out of your netbook!
