Disable Onboard Video

[GenePG]

I flashed my neighbor's BIOS to install a CPU upgrade. The AST PC mobo has an onboard video card. Mobo manual shows jumpers, but none related to video. New BIOS is unable to disable video. Now new 21" monitor and ATI video card are useless. Any ideas?

[Ptrper]

Hi Gene, have you tried looking at their site to see if they have any online manuals that you could download? What other info can you give us about this mobo?

[tcul72]

go to device manager and disable the display driver. shut down the computer(if it asks you to reboot click no). install the new video card and when windows starts it should find it and prompt you to install the drivers. then go to device manager again and you should have 2 things in the display settings. one(the onboard video) should have a red X over it. let me know if it helps.

[This message has been edited by tcul72 (edited 11-02-2000).]

[GenePG]

Ptrper: The mobo is AST proprietary w/ Triton chipset and onboard video and sound. AST went out of biz couple years ago--no website.

Tcal72: Tried what you said -- onboard video is very persistent. It keeps coming back whether disabled or removed. No red x. Tried adding new hardware (Windows 98 won't detect it auto) with new card and got scary beeps on boot with no new card and same old on board.

Generally, is there a chicken and egg thing with new video cards, that is, how does Windows display anything before you are able to install a new card?

Thanks,

Gene

[canit]

Gene the only thing I could add to the chicken and egg answer that Ptrper and tcul72 haven't said is to set window to standard display adapter/16 colors(either through device manager or display/settings/advanced/display adapter/change) before shutting down to install the videocard. BTW did you try www.motherboard.org (http://www.motherboard.org) to find the motherboard or manual(for defeating onboard video with jumpers or through bios)?

[GenePG]

Problem is no jumpers per manual -- probably original bios had setting. Now Evergreen 333 overdrive cpu is in w/ proprietary "Dr. bios" bios is in when I hounded Evergreen to overide "no-go" diagnostic result, arguing triton bios should work. It did, but lost disable video functionality (lot of speculation here). All moot now - my neighbor is spec'ing a 1.1gigMhz Dell fully loaded cause old puter has no USB for dsl. Must be nice - not like he's stuck. Old vid on old pc will still run monitor at 800x600, 16 bit color depth. That will have to do. Thanks for all the suggestions!