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Brand new video card working... suddenly no longer detected
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I've been piecing together a new system slowly over the past three weeks,
finally went out and got the finishing touch today, a new graphics card.
ASUS EAH4850 1GB HDMI
http://au.asus.com/products.aspx?l1=...14&modelmenu=1
Put it in, loaded drivers from disc, then loaded new drivers (downloaded from ASUS website, specifically for this product). In retrospect, I now realize that I should have uninstalled the old first prior to loading the latest, but I think that is moot at this point (for reasons below).
So rebooted, switched the monitor signal plug from the on-board graphics to the new card, configured settings, then was curious to see what it could do, so started trying out a 3D game.
Everything seemed to be working fine, spent about an hour then all of the sudden, screen went black. Was not a hard crash, I thought it was at first, but the computer was not shutting down, so I realized I had just lost video.
So I shut it down, then switched back to the onboard graphics, booted up and then one of the supporting softwares that came bundled with the card which starts up on system start up popped up a window saying that the device was not detected. Apparently Vista is not detecting it. Though the fan on the vid card still spins, and the LEDs flash when I power down or up (I have a window on my case so can see it).
So shut down, opened case, double checked that it was in the PCIe slot firmly, double checked the auxiliary power connection. Then plugged the monitor cable back into the card, booted up, and still no video. Each time booting up wold again get teh window from supporting software (a temp monitor for the vid card) that there was no device detected.
So did some research, uninstalled all graphics drivers completely (using Vista's control panel "programs and features" to do it). Including for the on-board ATI 3300. Rebooted and now the device manager no longer shows the new graphics card device either.
So I verified that both vid card and mainboard make use of PCIe2 (as opposed to PCIe1):
http://www.ecs.com.tw/ECSWebSite/Pro...nuID=1&LanID=0
I checked my power requirement according to the eXtreme calculator:
http://g.imagehost.org/view/0798/Untitled_6
The result is 337 W * 30% Factor of Safety = 438 W
So I think that the PSU is ok.
I read this:
"...All pci-e power supplies must have 26amps on the 12v rail , and be 80%+ efficient , only variance is wattage..."
I don't know exactly how to interpret the specs on my PSU, here is my spec sheet for PSU:
http://www.acbel.com/PDF/P_PC/SingleiPower-560.jpg
I think it means I have only 18 Amps on the 12 volt rails, but perhaps that is offset by having three 12 volt rails(?)
I have two 6+2 pin aux connectors for vid cards coming from my PSU, so I just tried swapping them (thinking that perhaps I somehow damaged the circuit of the first by attempting to draw too much power). No luck, the vid card is still not detected (no plug-n-play new hardware found window, nor is it shown in the device manager where it was when I originally installed it). The fan and LEDs on it are still working.
I also tried the 4-pin connector that plugs into the M-board near the PCIe slots - just quickly plugged a spare fan in on one of the other 4 pins form the same branch, it spun, and I think that's a parallel circuit so that one should have power too.
Then I turned off my onboard video in order to attempt to force Vista to detect my card at the PPCIe slot. That didn?t work so am now without any video. I will reset the cmos in order to restore bios defaults to recover the onboard video.
After that I will try installing the card into the second PCIe slot ? the mainboard manual does not give any indication as to which one to use if using a single vid card, so perhaps switching slots will help.
Any other ideas/suggestions sa to how to get Vista to detect my new graphics card again?
Thanks