m747 motherboard has no video

[dirico]

Hi All,

I have another PC I am working on and everything else works except the video. I have tried using a pci video card besides the
one that is intergrated to the board but it still does not work. Any help is appreciated.

Thanks, Joe

[MR COMPUTER]

Sounds like your cpu is not firmly seated.Pull it,check the slot pins and reinsert it firmly.The 747 board is shipped with the cmos jumper in the "clear" position. Clear the cmos after you reseat the cpu.

[dirico]

Hi All,

I did clear the CMOS but no beep codes.

Thanks, Joe

[MR COMPUTER]

Pull your memory and reinstall.Look for a jumper next to the dimm slots.(Video jumper)

[dirico]

Hi mr cpu

I took out the memory and reseated it. I took the chip out and booted up with the same situation.NO VIDEO. Could the chip be bad? I called the place where I got it and I am bringing it to them tomorrow to take a look at it. Anymore ideas till then? The only jumpers on this board are CMOS, leds, dimm voltage, on board sound and microphone selector.

Thanks, Joe

[MR COMPUTER]

Last idea for tonight. Dimm slot #1 must be used for the onboard video.If your memory is not in dimm #1 - no video.

[dirico]

I tried 2 different 32mb chips and a 64 and still no dice. The guy I bought this from said it is a m747 Alton board.

Thanks for all your help.

Joe

[dirico]

Hi,

I tried reseating the cpu and that did nothing. Still no video. Anyother ideas.

Thanks, Joe

[MR COMPUTER]

Did you clear the cmos? Are you getting any beep codes from the pc speaker?

[Peter M]

Hi!

Mr Computer, please concentrate :-)

The M747 has a separate SiS 6326 AGP VGA with its own 8 MB RAM. No shared VGA memory, no need to stick the DIMM into a certain slot.

The most common mistake is not setting the "CMOS Clear" jumper to "Normal". If it still sits in the "Clear" position (as shipped, to save battery life), any PC board does absolutely nothing.
(That's why newer PC-Chips mainboard manuals remind about this jumper almost every other page ...)

Regards, Peter

[dirico]

Hi Peter,

I have tried setting the cmos to clear-turn the pc on and nothing happens. I then put it back to where it was and still nothing happens.

[MR COMPUTER]

Peter - You are right about the video memory on the M747. However I had on that wouldn't "Light" until I switched the sdram to DIMM 1. Don't know why.
dirico - Time to strip it down. Mainboard,pwersupply,cup/fan,memory,video cable and keyboard. Pull the board out and set it up on something.(I use a 1" thick heavy foam mat).Make sure the power supply leads are plugged in so the black ground wires are in the center.
PS; Peter - I'm constipating as hard as I can!!!

[This message has been edited by MR COMPUTER (edited 06-02-99).]

[Susan]

When at a loss, I have tried to shock a MB by booting up with NO RAM in it and then rebooting it with it in.

I know it's sounds crazy, but...darn if it didn't work.

[MR COMPUTER]

Thats shocking ,Susan! But ,I'm gonna have to try it sometime..