Bios Video Memory Increase

Hello,

I recently purchased an Acer Aspire E1-531-4836 with Intel B960 Processor (2.2Ghz, 2MB L3 Cache) Intel HD Graphics and 4 GB DDR3 Memory. The Bios shows 128 MB of dedicated video memory however it will not allow me to increase this value.

I've just added an additional 4 GB of DDR3 memory for a new total of 8 GB. Is it possible to modify the Bios so that I can increase the Video memory to at least 256 MB?

I greatly appreciate any feedback and/or help.

Thanks in advance.