Looks like a new video card could overcome that as from the manual it says the onboard is disabled when you plug in the new video card.
I have a Dell Dimension C521 running Windows 7 Home Premium 64bit, but the installed display adapter is a Nvidia GEFORCE 6150LE which is preventing me from upgrading to Windows 10. If an upgrade doesn't become available within the free upgrade period (before 29/7/16), what other options do I have? I don't want to change the PC. Other hardware in the PC includes Dell HY175 Mainboard, 500GB Hard Disk, 4GB RAM. AMD 2.4GHz Processor.

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