The GPU fit in the PCI slot nicely and I gave it its own line to the power supply (same setup as the old computer). When I turned the computer on the GPU fan spun, but my monitor was not getting a signal.
I put the Radeon HD 6670 that came with the new computer back in and everything works as it should.
Why didn't the GTS 250 work?
Am I wrong and the Raedeon HD 6670 is better and I should just keep it?
ensign_lee United States. July 27 2012 02:49. Posts 1021
Have you done your windows install and made it in there yet? If so what OS are you using. If not, it's very possible that it's a driver issue. If you have onboard gfx, have you tried connecting to that yet so that you can get up and running, as darkcs suggested?
Have you installed the drivers for your gts 250? And is the power plug that you're using for the card the maximum number of pins the card can take?
And are you sure that you got a good fit / seating on the gts when you were testing it?
All of that said - if the fan is spinning, and another gfx card works in the slot (so the slot is presumably fine), it sounds like it's just an issue of drivers.
If it isn't posting (nothing at all is going to the screen when you turn the computer on), then it cannot be a driver problem since the computer hasn't even reached the point where it loads drivers until windows loads.
The GTS250 is a bit better than the 6670. Here is a quick chart that's a culmination of a bunch of different benchmarks. It has the 6670 as well as two 6670s in crossfire, so when you're looking at it be sure not to confuse the two.
In my experience, the number one cause of video cards not posting is the customer plugging the monitor into the motherboard instead of the card. I doubt you're doing that since you're plugging it in properly to the 6670, but it's worth the mention.
The second most likely cause is probably the power supply. Are you using an adapter to get the 6-pin connector? The computer says it only has a 500W psu, which is over the 450W specified by nVidia's site for the GTS250, but if it's a really crappily made psu, it's possible it isn't outputting the power the card needs. Try using your old psu and see if that works.
The last cause I can think of off the top of my head is that the GTS250 died. It doesn't happen often, but if you're unexperienced and accidentally shocked it or something, it could have happened. I would put it back in your old computer to double check that it is still working.
Checked the GTS 250 on the old computer - it still works (didn't die).
The GTS 250 has two ports for monitor, I tried both, both don't send any signal to the monitor when in the new computer. (I have an acer monitor so while the computer is running I turn the monitor off then on, and it displays the acer logo and then displays a text box saying "no signal", then goes dark, same as when I turn the monitor on without any connection to the computer.)
I triple checked that it fit correctly into the PCI slot... every pin fits into the PCI slot and none of the pins metalic/gold part is visible at all.
I didn't try using my old comps psu because I read it and realized it was a 350W psu (not sure how its been running the gfx card if its below the minimum all these years but I figure even if I got a crappy 500W psu, it probably gives as much power as my old 350W one which was enough for this GTS 250.) Also, I tried powering a hard drive with the two 3 pin wires that I later used for the gfx card to make sure both had power and both were able to power the hard drive.
Anyways, thanks for the suggestions, I think I'll give up on this unless someone has a really good idea of why no signal is being sent to the monitor.