Windows 7 is not a supported operating system per
https://obsproject.com/download . The Windows release of OBS Studio supports Windows 8, 8.1 and 10. As long you have a legal copy of Windows 7, you can still update to Windows 10 for free per
Want a free Windows 10 upgrade in 2020? This is how you do it...
www.forbes.com
The i3-2310M has Intel® HD Graphics 3000. If you can get it working with a supported operating system, you are probably going to want to use Quick Sync for the encoder.