no video output on boot

[fatblueduck]

Hi

I am building a new computer with a pentium 4 640+, intel d945PVS motherboard, and an evga 7800 GT, in a TJ 06 case with 500 W power supply. On bootup, the fans in the case, the power supply, and the processor fan turn on. A little green light near the power supply input on the motherboard turns on as well. There is no beeping, and there is no video output to show the POST. I made sure that the DVI connection was connected to the first monitor output on the card and tried the other output as well. The optical drive does not turn on. Any ideas as to what could have gone wrong?

Thanks,
- Chris

 

[Fardringle]

What power supply are you using? Those results sound like either you have a bad component (CPU or motherboard), something is not seated properly, or the PSU just doesn't have enough juice to run your components.

Try reseating everything to make sure it is put together securely, unplug anything you don't need to get the machine to turn on (take out everything except CPU, RAM, and video card), and maybe even try put it together outside of the case to see what happens.

 

[fatblueduck]

Fardringle,

-The Power Supply is an Antec Phantom 500.
I've unplugged everything, except the motherboard, cpu, ram, and video card. I've reseated the video card and the ram. There is no output to the screen, but I know that the components are recieving some power, because heatsink fans on the processor and the video card work.

 

[BadThad]

Do you have another video card you can test in the system or can you put that card into another system to test?

 

[fatblueduck]

I don't have another video card that will exaclty fit the AGP slot.

The part area of this new video card that plugs into the AGP looks like...
|_______________________________________|--|____|

An older video card that I have has a shorter plug-in side, like...
|_______|--|_______|--|_______|--|_______|

Should I plug the older video card into the longer AGP slot anyway?

 

[BadThad]

Originally posted by: fatblueduck
I don't have another video card that will exaclty fit the AGP slot.

The part area of this new video card that plugs into the AGP looks like...
|_______________________________________|--|____|

An older video card that I have has a shorter plug-in side, like...
|_______|--|_______|--|_______|--|_______|

Should I plug the older video card into the longer AGP slot anyway?

Depends, read THIS and figure out if you can....I'm not sure by your "drawings", lol. However, normally, if the card fits it will be fine....but I don't want you to fry the mobo.

 

[fatblueduck]

I read the information you provided and ecided that it was safe to plug the old card into the agp pro slot. The old card doesn't produce any video output either.

I know that both cards send a signal to the monitor, because the light on the monitor changes color when I turn the power on.

 

[BadThad]

Have you tried resetting the CMOS yet?

 

[fatblueduck]

I've tried reseting the cmos twice; once for each card. Still no go.

 

[Steaksauce]

Did you use spacers?

 

[fatblueduck]

I installed with spacers. Now, the motherboard is sitting on top of the wrap that came out of the box in, so that I can more easily work on it.

 

[BadThad]

Originally posted by: fatblueduck
I installed with spacers. Now, the motherboard is sitting on top of the wrap that came out of the box in, so that I can more easily work on it.

Excellent, that was my next suggestion. Also, make sure nothing is attached to the mobo to see if you can get a post screen. All that should be connected: CPU, RAM (one module only), and power. Just momentarily jumper the pwr switch connector when testing.

Next step, do you have another power supply you can try on the system? Once we've eliminated that, the mobo is all that left (I doubt the cpu is defective). Oddly, Intel mobos are about the best you can buy, I'd be a bit surprized if it's bad.....but you never know.

 

[Steaksauce]

clear cmos and take out batteries for couple of minutes. did you connect the speakers correctly so that beeping can be heard according to the manual? Try just one RAM at a time. Use onboard video if there is one.

It's strange that the optical drive does not turn on though. can't be the power cable not being plugged in.

 

[thenoelman]

Originally posted by: fatblueduck
I don't have another video card that will exaclty fit the AGP slot.

The part area of this new video card that plugs into the AGP looks like...
|_______________________________________|--|____|

An older video card that I have has a shorter plug-in side, like...
|_______|--|_______|--|_______|--|_______|

Should I plug the older video card into the longer AGP slot anyway?

----------------------

Are you sure you have the right video card for the slot? if it's agp from what I've found you need the one with the L at the end. The top one that you show looks like pci-e. Most agp's only have 2 notches and a fourth notch before the L at the end of the card that clips in. Search google images maybe.

 

[Steaksauce]

http://www.intel.com/products/motherboard/d945pvs/
The mobo takes PCIe, so the 7800GT better be PCIe as well. I don't know how the AGP card fit into that slot though.

 

[boomerang]

Do you have the 4 pin power connector plugged in? You can see it near the lower right corner in this pic. There is a possibility there may be a third power connector not seen in that pic. Find out.

Your video card also requires a power connector to it. Do you have that plugged in?

Also, your board does not have an AGP slot. Only PCI-Express x-16 for your video. Plugging in the other video card was most likely a very bad thing to do.

You say you reset the CMOS twice, once for each card. You mean once before each vid card or what?

When you reset the CMOS, you need to follow the procedure exactly as stated in the manual for your board. Intel boards usually put the manual on the CD that came with the board.

Reset the CMOS following the procedure to the letter.

Plug in ALL power connectors required.

I hope you have not damaged your board plugging in an AGP card.

 

[fatblueduck]

BadThad

The only things connected are motherboard, one ram, and video card.
I have another power supply, but the motherboard cable on this other psu is only 20 pins. The connection on the Intel motherboard is for a 24-pin connection.

AAAAHHHHHHHHHHHHHHH!!!! OH MY GOOOOOOD!!!! IT WORKS ITWORKS IT WORKS ITS WORKING ITS WORKING!!!

the motherboard needed two powersupply connections to be plugged in!

I'll reinstall the hardware and then report back on my optical drive. Thank You so much. I'm so happy!!

 

[Steaksauce]

Which connector on the first and second psus did you plug in exactly?

That is a first... probably a dude psu then if the same connector on the first psu didn't do the job.

 

[fatblueduck]

I plugged in a long 24-pin connection at the end of the motherboard and I had to plug in a square shaped 4-pin connection near the processor and heatsink.

By the way, the optical drive is working now, so it seems my problems are over.

Thank you all very much for your suggestions and help

 

[Steaksauce]

Originally posted by: fatblueduck
I plugged in a long 24-pin connection at the end of the motherboard and I had to plug in a square shaped 4-pin connection near the processor and heatsink.

By the way, the optical drive is working now, so it seems my problems are over.

Thank you all very much for your suggestions and help

Ohhhh, I got ya. You forgot the 4 pin plug. Live and learn. =)