fans on no beep no video on Biostar Mobo

November 9, 2010 at 21:54:31
Specs: Windows XP, AMD/DDR2 1GBx4
Hello all, my name is Mike and I need some advice from some experts. this unit belongs to a friend that gave to me to check out for him as i dable in this sort of thing. i have a Biostar TA780G M2+ in a chubby shuttle that has no beep, no video. i have removed all drives and Mobo from case to make work easier for myself and have not reconnected anything to make sure nothing is causing any problems. it has a e-GeForce 8800 GTS vid card (pretty nice too) with dual outputs. power and HDD lights acting odd as well. does the Mobo have a setting in bios that auto detects vid card or does it have setting to disable onboard vid and only send vid to PCIe vid card? my buddie said he replaced Mobo, PS and CPU, but nothing happened, i belive its the Mobo but will pick up his spare parts to confirm this actually happened.

any help would be appriciated friends and keep up the great work! :>)

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November 9, 2010 at 22:02:50
If you have one laying around, I would try a different power supply. The video card could be a problem also because it requires at least a 400 watt power supply. So, if the power supply is a 250 watt or something similar your problem is most likely there.

Pentium 4s - The processors for the rest of us.

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November 9, 2010 at 22:17:48
Oh, I forgot to mention that I did try a spare power supply but it is only a 250 watt, but I didn't have vid card connected to eliminate that. That is a good point about the wattage requirements for the vid card, geez! Im not a gamer so I am not to familier with those items. I didn't think of that so thanks for mentioning it. I don't have another large ps as of yet, still working on it

Good nite all, Mike. :>)

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November 9, 2010 at 22:20:26
Plus the original power supply is a 500watt, all parts are a custom build that my buddie built for gaming, so he did a nice job, it worked well for about 2 years.

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November 9, 2010 at 22:23:29
I will be ordering a new Mobo to test his power supply and a new power supply to test his Mobo soon.

Ttyl, Mike. :^)

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November 9, 2010 at 22:39:40
That motherboard has onboard graphics so that's what you should be using for testing purposes. There should be nothing connected to the board other than the CPU with HSF, one stick of RAM, power supply, monitor & keyboard - nothing else. Jump start the board using a screwdriver. Does the 250W PSU have a 24-pin main ATX plug & a 4-pin ATX12V plug? If not, you're wasting your time with it.

Also, see response #6 in this thread:

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November 10, 2010 at 07:25:56
Wow, you all respond very quickly, that is great, thank you. i think i will be a regular member here. Yes, it does have the 24 pin molex plug and 1 stik of ram in slot1 and the 4 pin 12v molex as well, i verified the 12v on both yellow leads and both grounds are in order. i will jump the Mobo in a few. will the Mobo auto detect or is there a possibility that my buddie changed the bois to look for vid card in PCIe only, even though it is not there?

Mike. :^)

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November 10, 2010 at 10:09:43
"will the Mobo auto detect or is there a possibility that my buddie changed the bois to look for vid card in PCIe only"

The graphics setting is for Windows, not for the POST or BIOS display.

BTW, I posted the link in my other response to let you know you're being helped by a 13 yr

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November 10, 2010 at 11:31:09
Thats funny, i did think it was odd that someone mentioned the wattage needs for a vid card, even though i did mention in the same thread that EVERYTHING is disconnected except primaries. i want to know if this Mobo has a setting in the bios for auto detect or can it be disabled, i ask as i think i had seen this option in the BIOS in another Mobo some time ago, maybe it was for something else in bios, no matter, i need to know as if he did disable onboard video, and he forgot, then i tell him it is the Mobo, and it is not, then i will feel like crap.

I want to make sure the Mobo and PS are ok, then i will check vid card, memory has passed all tests as well, so keep that in mind friends. I thank anyone who can help no matter what age, as long as thier heart and knowlege is in the right place.

hey Compgeke, are you a gamer and what vid card do you use little guy?

The graphics setting is for Windows, not for the POST or BIOS display. i understand that this is true, but there are a few things that the bios control, like shared memory for onbaord vid, right? I think i will make this simple, look below for simple questions friends.

1) does a Biostar TA780G M2+ have a setting in bios to ignore onboard vid and look for PCIe card?
2) could it possibly be the northbridge processor?
3) is there a lead (power output) from the pwer supply that helps onboard video?

I just want to start with trouble shooting the mainboard and PS, then i will work out from there. i believe you should start with the heart first, then work out to extremidies, if the MObo is fried, then he will just have to scrap it and find a nice one.

i hope no one takes any offence to my responces as every time i respond, it is with i silly smile, no matter how trivial, hehe. i might seem blunt, but i have to be direct and some might take as rudeness, and for that, i am sorry.

Mike out.. for a bit. :^)

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