troubleshooting Motherboards won’t display video output

[lachietg]

I have 3 gigabyte motherboards and none of them are working, I have 3 different video cards  5 cpus and 5 ram sticks and I have tried all different combinations and I can’t get any of them to work 

they are all lga 775 boards with ddr2 ram (a bit old I know)

and help would be  appreciated

edit:the motherboards are 

https://www.gigabyte.com/Motherboard/GA-8I945P-G-RH-rev-1x/

https://www.gigabyte.com/Motherboard/GA-965P-DS3-rev-10

https://www.gigabyte.com/Motherboard/GA-P31-DS3L-rev-1x

gpus:

https://www.gigabyte.com/Graphics-Card/GV-N98TGR-512I-rev-21

https://www.gigabyte.com/au/Graphics-Card/GV-NX84S512HP

https://www.gigabyte.com/au/Graphics-Card/GV-N750OC-1GI

[emosun]

is the ram compatible

is the cpu compatible

does the monitor work

are the gpu's compatible

[Bombastinator]

Define “work” to start.  
Well of the 3 I see only one of them seems to be plugged into anything.  I’m assuming that one doesn’t work either though.  That particular board is dual channel only I think considering the coloring of the ram ports.  You might be able to get it to work if you used 2 ram sticks in the yellow slots.  Also the PSU might not actually be functional.  

[lachietg]

yes, it is standerd ddr3 800

yes, i checked on motheboard website

yes , also i tested 3 differnt monitors just in case

and yes they are 

[emosun]

2 minutes ago, lachietg said:

yes, i checked on motheboard website

yes , also i tested 3 differnt monitors just in case

and yes they are 

and you of course wouldnt want us to know what cpu or gpu's you are trying correct? nor what motherboards these are

[Bombastinator]

12 minutes ago, lachietg said:

yes, it is standerd ddr3 800

yes, i checked on motheboard website

yes , also i tested 3 differnt monitors just in case

and yes they are 

Was that a reply to my statement?  If so none of those things apply.

 

1: does the PSU actually work correctly?  There seems to be only one of those.  If it doesn’t work nothing else will.

 

2: dual channel memory slots.  They’re different colors on purpose.

 

3: haven’t even gotten to monitors yet.  “Doesn’t work means doesn’t power up”. If it does power up but doesn’t post that’s a different thing.

[lachietg]

1 hour ago, Bombastinator said:

Was that a reply to my statement?  If so none of those things apply.

 

1: does the PSU actually work correctly?  There seems to be only one of those.  If it doesn’t work nothing else will.

 

2: dual channel memory slots.  They’re different colors on purpose.

 

3: haven’t even gotten to monitors yet.  “Doesn’t work means doesn’t power up”. If it does power up but doesn’t post that’s a different thing.

sorry man i was replying to the other guy but yes i have tested multiple psus 

and 2 yes i did try 2 dimms in dual channel 

and it powers on but doesnt display a video signal if thats what you are talking about

[lachietg]

1 hour ago, emosun said:

and you of course wouldnt want us to know what cpu or gpu's you are trying correct? nor what motherboards these are

sorry they are 

 9800 GT

https://www.gigabyte.com/Graphics-Card/GV-N98TGR-512I-rev-21

8400 GS

https://www.gigabyte.com/au/Graphics-Card/GV-NX84S512HP

and gtx 750 1gb

https://www.gigabyte.com/au/Graphics-Card/GV-N750OC-1GI

 

[lachietg]

Just now, lachietg said:

sorry they are 

 9800 GT

https://www.gigabyte.com/Graphics-Card/GV-N98TGR-512I-rev-21

8400 GS

https://www.gigabyte.com/au/Graphics-Card/GV-NX84S512HP

and gtx 750 1gb

https://www.gigabyte.com/au/Graphics-Card/GV-N750OC-1GI

 

and the motherboards are 

https://www.gigabyte.com/Motherboard/GA-8I945P-G-RH-rev-1x/

https://www.gigabyte.com/Motherboard/GA-965P-DS3-rev-10

https://www.gigabyte.com/Motherboard/GA-P31-DS3L-rev-1x

 

[Bombastinator]

10 minutes ago, lachietg said:

sorry man i was replying to the other guy but yes i have tested multiple psus 

and 2 yes i did try 2 dimms in dual channel 

and it powers on but doesnt display a video signal if thats what you are talking about

It was.  So we got power on.  You got a manual for those boards?  I see they’re all subtly different.  Argh.  The look identical in the photo.  Do any of them at lest have error light codes or a debug readout?

[lachietg]

Just now, Bombastinator said:

It was.  So we got power on.  You got a manual for those boards?  I see they’re all subtly different.  Argh.  The look identical in the photo.  Do any of them at lest have error light codes or a debug readout?

1 no, i unfortunately dont have a manual

2 no, but i  attached a pc speaker but it remained silent

[Bombastinator]

You’re going to need 3 manuals.  One for each board.  They’re all different.  There’s going to be a debug procedure for each of them. All different.  Hopefully somewhat similar because it’s the same manufacturer.  No promises.  Manuals are downloadable from the gigabyte website.

figure out which one has the most feedback data (lights, sounds, whatever) and do that one first.  That there are no known good parts makes this a version of hell.  Every part is going to have to be tried in every combination on every board every time, and if all three possible parts of any one type are all bad, there’s no way to learn anything.  The evil is outlandish.  I’m glad I’m not doing it.

 

bright side is once we get one going there will be a way to find known good parts and it will go much faster.

[lachietg]

14 minutes ago, Bombastinator said:

You’re going to need 3 manuals.  One for each board.  They’re all different.  There’s going to be a debug procedure for each of them. All different.  Hopefully somewhat similar because it’s the same manufacturer.  No promises.  Manuals are downloadable from the gigabyte website.

figure out which one has the most feedback data (lights, sounds, whatever) and do that one first.  That there are no known good parts makes this a version of hell.  Every part is going to have to be tried in every combination on every board every time, and if all three possible parts of any one type are all bad, there’s no way to learn anything.  The evil is outlandish.  I’m glad I’m not doing it.

 

bright side is once we get one going there will be a way to find known good parts and it will go much faster.

yeah i will download the manuals ,as far as i know all of the graphics card are working so that rules out somthing :)

[mr moose]

Have you tried resetting the CMOS?

[lachietg]

1 hour ago, mr moose said:

Have you tried resetting the CMOS?

Yep , again to no success 

[dizmo]

Looks like 2 of the 3 are missing the battery. Have you been transferring the same battery between all three? Have you tried replacing that? 

[lachietg]

2 minutes ago, dizmo said:

Looks like 2 of the 3 are missing the battery. Have you been transferring the same battery between all three? Have you tried replacing that? 

Yes I have been transferring the battery, and I know the battery is good because it measured 2,7 volts in my multimeter 

[dizmo]

12 minutes ago, lachietg said:

Yes I have been transferring the battery, and I know the battery is good because it measured 2,7 volts in my multimeter 

Try replacing it anyway. It's the only thing between the three that's constant.

[mr moose]

5 minutes ago, dizmo said:

Try replacing it anyway. It's the only thing between the three that's constant.

This, they should be 3V's so at 2.7V it's likely dead,  in fact they can die reading 3V because of the type of cell they are and the load on them.

[lachietg]

13 hours ago, dizmo said:

Try replacing it anyway. It's the only thing between the three that's constant.

Alright 

[lachietg]

13 hours ago, mr moose said:

This, they should be 3V's so at 2.7V it's likely dead,  in fact they can die reading 3V because of the type of cell they are and the load on them.

Oh alright I didn’t know that