Hi I don't know about your pc but if it is an i3 it should have the HD 3000 as you mentioned.
And the drivers from Intel should work.
To be sure you don't have a different CPU can you check in control panel for system and it will list the CPU type and also check if the your windows 7 is 32 or 64 bit. All the info will be there.
I just thought that maybe you have tried to install a 32 bit diver on a 64 bit windows 7 or 64 bit on Windows 7 32 bit.
Edit I re read your post an saw the picture that you have the Nvidia working to use the HD 3000 you need to change it in the bios.
There you can choose the on CPU video or the Nvidia.
That will be the most likely reason it cant be seen as the bios only switches one on at a time usually.
Although on some PC's you can run both video adaptors and use a software which will decide the best video adaptor and change if needed.
The software should of come with your pc or be on its site if it is usable on your pc.
Any questions feel free to ask
Message was edited by: Kevin Provan
I was just reading the Handbuch and lucky it was in English as my Deutsch is average (I'm in Australia).
I was looking to see if the bios could change the graphics but your Nvidia should be ok anyway but it would be nice for you to see which performs better.
I will keep looking as it's evening here and not much else to do right now.