Problems installing "new" graphics card

L

laziboie

New Member
This is my first time posting on here, but I am confused right now. I have a stock compaq presario sr1650nx computer. I upgraded the graphics card last year to an xfx nvidia 6800xt; everything was fine. My friend just upgraded his computer and gave me his old evga 7900gtx that he said was working fine when removed.

SO I installed the new card into my pci-e slot and hooked up power, plugged everything in, and there was no video signal being sent to my monitor. The card is powering up b/c the fan turns on, but I can not get any signal off of either of the outputs on the back. I checked everything with the monitor plugged into the onboard video and made sure that I had PCI-E selected in the setup. I also downloaded the updated drivers, but it wouldnt install because it didnt recognize an NVIDIA card's presence. Is there something that I am missing? :confused::confused:

Someone please help me out...I am sure I just forgot to do something. I am not an expert by any means, just trying to get back to my BF2 and whoop some arse.

Thanks so much for any help!:):)
 
Hmm, so it doesn't show anything on the screen anytime? If its a LCD and you have it hooked up either VGA or DVI, make sure its on the correct input. Have you tried putting the other card back in to see if it works?
 
69mako said:
did you plug in the 6 pin pcie power connector?
Click to expand...

um...yes. otherwise there would be no power at all right, and even the fan wouldn't turn on.

I just checked my connectors and that is the only 6-pin connector I have and Rosewill labeled it "PCI-E" just for me.

SO, do I need to disable my onboard graphics first? how do I do that, cuz I thought that entering setup and selecting PCI-E was switching it. Will it make a difference if I disable with the device manager?
 
I did clean the card out really well with canned air, it had a lot of dust in it. Could this have caused any ESD or something of this nature? I am always really worried about ESD, is it really that serious of a problem when installing new components? As long as I stay in direct contact with the case I should be fine right?
 
I think thats fine, it may be the on-board graphics conflicting with it. Will it atleast go into bios or show the screen before windows starts to load? and if it has on-board, just take the card out and leave the PCIe empty and see if it boots.

Im not sure, maybe someone else here will know. I hope you get it fixed, its late here, i best get to bed :P
 
ThatGuy16 said:
I think thats fine, it may be the on-board graphics conflicting with it. Will it atleast go into bios or show the screen before windows starts to load? and if it has on-board, just take the card out and leave the PCIe empty and see if it boots.
Click to expand...

Well thanks for all of your help anyway...It does not go into the bios screen; as a matter of fact, the monitor shows no signal at all when I am plugged into either of the DVI outputs. It is a VGA lcd monitor, but I have the DVI > VGA adapter to use. When I plug into the onboard, it works like a champ. So maybe it is because the onboard is not disabling (or something like that). Is it okay for me to disable the onboard through the device manger? how will that turn out?

Humor me guys, I am really just trying to get this to work.
 
Yeah, disable it through device manager or bios. Im not 100% on were, but use your imagination. And then put the 7900GTX back in, it should work. It sounds to me like the on-board is causing the confusion...
 
ok, so I tried disabling my onboard through the device manager and that didn't work. I took out the new (7900gtx) card and installed the old one, and the old 6800xt works fine.

I am now leaning towards the issue of not enough power. How power hungry are these cards? I know I looked online for the system requirements and it said a, "A 400W PCI Express complaint system power supply (with 12V current rating of 26A or more)."

My current setup is with a rosewill power supply RV450S-2 which is a 450W PS. I don't completely understand b/c the reading on the side of the PS shows, "+12V1 = 17A / +12V2 = 16A." Just guessing but does that mean that if I add the two values together, I get +12V with a current of ~33A? :confused:

Someone please help, I have been waiting so long to get a decent card and now it doesn't work.

:confused::confused::confused::confused::confused:
 
from what I read about the MB, it appears to automatically disable onboard video when a card is installed. As long as you know the new card is good, I'd look into a more powerful power supply. Can you try the card on another computer?

Mako
 
69mako said:
from what I read about the MB, it appears to automatically disable onboard video when a card is installed. As long as you know the new card is good, I'd look into a more powerful power supply. Can you try the card on another computer?

Mako
Click to expand...

I am actually thinking the same thing, and some of my friends have suggested the PS as well. I am going to give it back to the guy who gave it to me and he is going to look at it tonight so hopefully it works for him. Then all I need is a better PS.

Thanks for the help.
 
OK...so I purchased a RAIDMAX RX-630A 630W power supply and that did not fix my problem!!!!!


WTF!!!!! The card works on my friend's computer...

My old 6800XT works on my computer...

Why wont this damn thing work!!!:mad::mad::mad::mad::mad:


SOMEONE PLEASE HELP!!!
 
could there be a conflict with my motherboard?? I don't understand why they would be conflicting since I have a 6800 in there now and it does fine. :confused::confused::confused::confused::confused::confused::confused:
 
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