I have disable Graphics Aperture size and Graphics share memory from my bios now I can not find them in Advance bios featuesin my bios and can not open my computer from onboard VGA. When try my screen goes black and nothing. I open my computer b other AGP card but now in my bios ther is now Graphics Aperture size and Graphics share memory in Advance bios featues.please help me to restore them

You can install a graphics card in the expansion slot. You may need to disable the on-board graphics in the BIOS setting first.

You may be able to disable the video card in the BIOS. This will disable the video shared memory.

Most cheaper laptops do not include a full-blown graphics board with expensive dedicated graphics memory. Instead, system memory is shared between the CPU and the graphics subsystem.
How much memory actually is reserved for graphics purposes depends on the software you are running. The frame buffer (the memory used to store the pixels on your desktop) is only part of it - games, for example use a lot of memory to store textures and geometry data.

• Minimum Graphics Memory: 128 MB
  The smallest memory size your system must reserve for CPU/Graphics sharing.
• Maximum Graphics Memory: 1341 MB
  The largest chunk your system can configure for sharing.

From the DirectX report you can see, it currently uses 27 MB only.
Your laptop lacks the CPU and graphics power to run high demand games anyway, so 128 MB of shared memory should be sufficient. You can configure this to 256 or 512 MB in the BIOS configuration menu, but I doubt it will make any noticeable difference for you.

Your AGP aperture size is 64 MB but your "Onboard VGA Share Memory" may be set only to the maximum available setting in your BIOS. (You may already be at maximum)

1. Highlight "Onboard VGA Share" press <Enter>
2. Change value with [+] or [-]
3. F10 Save and Exit

1) enter bios
2)make changes in shared graphics to 128 mb
3) increase the size of page sys file allocate more ram to page.sys file by going into rt click my computer/properties/ performance/
4 u can change your windows system to 64 bit.

u can disable the the on bord vga in bios
enter in bios then u see in ide or advanced vga disable it then save settigns .

The aperture size in your bios is the amount of main memory your card can use in case the card runs out of memory. It is intended for old video cards with very little or no on-board memory at all. For best performance with your card, set it to the lowest setting or turn it off completely.That May help.

all you have to do is go into the bios, do this by pressing F2 on boot up, when in the bios you need to look for "shared memory" or "graphics memory"
once you have chosen the shared memory you want save settings and exit by pressing F10, the pc will restart and the shared memory will be increased

regards

Where shared memory is present, the BIOS is used to change the memory size. On your machine you have a Mobility Radeon display card which has 128Mb of memory but the capacity to share a further 384Mb of system memory.

Most applications that show the memory, however, will only show 128Mb of memory since that's what the dedicated memory is. Although you can share more memory with it, it only has 128Mb of dedicated memory all to itself.

F2 when you turn the power on enters the BIOS and allows you to configure things such as video memory. There is strangely no data on it whatsoever in the Acer User Manual for this machine; "hypermemory" doesn't appear once in the entire document, so I'm not able to offer you any more direct support than to suggest looking in the BIOS.

its that a on board video card? you cannot tweak the graphics apparature. try to go on the RUN menu and type dxdiag and see what the approximate capacity of your videocard when it booted to your OS.