|I looked at the User manual and the Maintenance Manual listed for your model - they are both generic. There is no info specific bios info for your model in either,|
so I have no info what you actually see in it.
I assume you were looking at the System Setup - what Dell calls the bios Setup
"To access the System Setup program....
Turn on or Restart your computer.
When the Dell Logo appears, press F2 immediately"
In the generic manual there is a category
"Boot (startup) and Display Settings"
Do you see anything like that?
If you do what does it say in the Display Settings section?
Click on all the lines in that, or any > at the end of the lines - sometimes expanded choices will appear when you do that.
Do you see any more choices?
In the User manual I found:
chipset Intel Mobile 915 GM Express
Video type - integrated in chipset
Intel Graphics Media (GMA) 900
Video memory - up to 64mb shared
(so your maximum is 64mb)
Using the System Setup Program
page 137 of pdf
How to re-install drivers.
In Windows - make sure the proper video and monitor drivers are loaded. If the proper video is not listed, re-install the video drivers. The monitor should probably be at least Plug and Play Monitor, not Default Monitor.
(Control Panel - Display - Settings)
Look in Control Panel - Display - Settings - Advanced
to see if there are settings there where you can change the amount of shared ram the video uses (usually that's not there).
Look for Dell utilities in the Program listings to see if there is anything there to do with Video