Please follow the instruction here for the shared VGA memory size setup.
1. Press [Delete] key in POST screen to go to BIOS setup
2. Go to Chipset > SouthBridge MCP68 Configuration
3. iGPU Frame Buffer Detect set to [Disable]
4. OnChip VGA Frame Brffer Size can be select from [16MB/32MB/64MB/128MB/256MB] as you needed.
5. Press [F10] key to Save and Exit the BIOS setting.
6. After next boot up, system will run with new shared VGA memory setting.
Note: Please reserve more than 2GB of free memory space (exclude VGA shared memory size) for Windows 7 to run properly.
