New build works, except for video card

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S-Africanus

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After my old AMD 720 X3 based system overheated and died a few months ago, I finally got around to rebuilding with the following new components:

CPU-Intel 4670K
MB-MSI G45
Memory-Kingston 8GB
HD-Samsung 830 256 GB


I retained the following:

Video Card-HIS 6850, 1 GB
HD’s-WDC 640 GB; Samsung HD103SJ 1 TB
DVD-Pioneer DVD
Case-Lian Li PC-7

Everything booted up and is working well, except that the HIS 6850 doesn’t show up and my graphics are Intel HD4600. I know that my old CPU was seriously overheating and the system shut down and would never turn on again, but on the last start-up before death, the video card was working.

Are there any steps I might have overlooked in re-installing the video card or any suggestions for trying to troubleshoot this problem?
 
Solution
theclouds
Here are PCI-e connectors from the TX 650:
BViBstM.jpg

Either of these two will work. The one on the right is a 6 pin with +2 to become an 8 pin for GPUs that require it. We don't worry about it. Either the left 6 pin or the right 6 pin will work.

Your card (to make sure we're dealing with the same card):
8a2fzpw.jpg


The connector for the card above:
Z9Q6BwB.jpg


Now, I'm pretty sure you connected the right power cable to the gpu, 6 pin in the 6 pin slot. If it fits, it's right.

Theories:
We know the system boots up, so the PSU is okay. The likelihood both 6 pins on the PSU are damaged/broken/not functioning is slim, especially since one of them was working...
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theclouds

theclouds

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Quick way to single out if the card is the problem is to try it on another system. Probability tells us if the card doesn't work on that system it is most likely at fault. Try this first before we try to troubleshoot further.
 
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S-Africanus

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theclouds

theclouds

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LAN party is an experimenter's playground. Between now and Friday, try reseating the card. You'll be surprised how often this happens and goes overlooked.

I ran a components check, and the motherboard + 6850 + HDD + RAM are compatible.

Keep us updated!
 
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S-Africanus

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No fans; could I have the wrong power cable going to it? My Corsair TX 650 has two 6 pin cables and I've tried both without success. There's also an accessory harness in the box with a 6 pin connector that's wired to two white 4 pin connectors, one with 4 metal prongs inside and one with two prongs inside. I'm not sure what that was for. Maybe it was needed with my Biostar TA790GX 128M? I didn't pay too much attention to disassembling the old build.
 
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theclouds

theclouds

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Here are PCI-e connectors from the TX 650:
BViBstM.jpg

Either of these two will work. The one on the right is a 6 pin with +2 to become an 8 pin for GPUs that require it. We don't worry about it. Either the left 6 pin or the right 6 pin will work.

Your card (to make sure we're dealing with the same card):
8a2fzpw.jpg


The connector for the card above:
Z9Q6BwB.jpg


Now, I'm pretty sure you connected the right power cable to the gpu, 6 pin in the 6 pin slot. If it fits, it's right.

Theories:
We know the system boots up, so the PSU is okay. The likelihood both 6 pins on the PSU are damaged/broken/not functioning is slim, especially since one of them was working fine prior recently. (Note: Don't take my word for it. You could always use someone's PSU at the LAN Party to test this.)

This leads me to believe the GPU is at fault. I did consider the PCI-Express slot on the motherboard could be damaged since the card isn't detected in the OS, but then that doesn't explain why the fans on the GPU aren't spinning. All the evidence points to the GPU being at fault, specifically the interface between the card and the PSU 6-pin.

Hate to be the bearer of bad news, but whatever fried the CPU might have had an adverse impact on your card. We'll know the answer for sure when you try to connect another 6-pin from a different functioning PSU. Good luck.

EDIT: Don't worry about the adapter accessory; it's just used to convert between 6-pin and 4-pin molex:
WCQCA6H.jpg
 
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Solution
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S-Africanus

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Curioser and curioser! cried Alice.

The report from the LAN party is "computer won't boot" with this video card and. "never seen that before". I have to say that when I tried the video card in slot 2 the other day, either it didn't boot or there was no display at all. I just can't remember which it was and the card is still at the LAN party so I can't check it now.
 
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theclouds

theclouds

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In another moment down went Alice after it, never once considering how in the world she was to get out again. - Welcome to the PC World.

I still stand by my conclusion: Since the fans aren't spinning, all the evidence points to the GPU being at fault, specifically the interface between the card and the PSU 6-pin. This is all assuming the pci-e connector is attached securely to the card, which is easy to determine with the latch in place. Fans not spinning is an immediate red flag. Possible reasons:

1) Dust build-up so extreme as to prevent fan from spinning. A good cleaning is worth a shot to eliminate this possibility.
2) Power is going to the card, but fan bearing is damaged. You could try replacing the fan.
3) Damaged fan connector from the previous removal of the card. Note: if aggressive more than the fan connector could be damaged as well.

Some possible solutions may involve more time than others and you'll have to decide if it's worth your time.

Card Recommendations: A 650 ti offers similar to slightly better performance so it's a possible replacement, especially at their current prices. 660 is still the best value right now for most people for a little more. It comes down to what you plan on doing with the card.
 
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S-Africanus

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I'm thinking that a GTX 660 or GTX 760 might be good. I need a card for $200-250 that runs cool and is not too long. The HIS 6850 was about 230mm and I don't think I can fit anything more than another 13-20mm for an easy fit in my case and clearance on the motherboard.
 
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