Not every CPU or BIOS has this option to adjust VRAM allocation. Because most integrated graphics solutions automatically adjust to use the amount of system RAM they need, the details reported in the Adapter Properties window don't really matter. In fact, for integrated graphics, the Dedicated Video Memory value is completely fictitious. The system reports that dummy value simply so games see something when they check how much VRAM you have.  An integrated graphics solution means that the GPU is on the same die as the CPU, and shares your normal system RAM instead of using its own dedicated VRAM. This is a budget-friendly solution and allows laptops to output basic graphics without the need for a discrete video card. But integrated graphics are poor for gaming and graphically intensive tasks. Remember that VRAM is only one factor in video performance.  As long as your computer is within a few years old, you should have no problems watching videos, playing low-intensity games, and working in basic photo and video editing apps with integrated graphics. However, playing the latest graphically impressive games at a comfortable frame rate with integrated graphics is not possible.
system was so slow so upgraded the memory to 32gb made a big difference.  However there no option in Bois to up the sharged memory for the onboard G-card.  all my other dells allowed me to do this.  Anyone have a fix on how to change this?
Inspiron 5400 AIO shared memory