Question OLD i7 2600k PC does not POST with 6700 XT card

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sermejong

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Apr 29, 2012
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Bought a 2nd hand Sapphire Nitro+ 6700XT which I tried to install in the system below. As the PC tries to POST, it halts on the graphics card which is indicated by a red led on the VGA_LED of the board. It's stuck there and fails to POST.

Notes:
- Seller sent a video of the card itself running furmark before packing it up and sending for delivery. Packaging and the card did not have any damage upon receipt.
- This same system POSTs on integrated graphics or when a Palit 1050ti is on the board.
- I used DDU to uninstall the Nvidia drivers beforehand in anticipation of installing the 6700xt.
- I already tried the ff but to no avail:
  • cleared cmos using the jumper
  • re-seated the 6700xt multiple times
  • tried to boot on all positions/config of the bios switch in the 6700xt
  • swapped with the 1050ti and the 1050ti always worked
  • booting after removing everything plugged on the back of the pc (motherboard) + unplugged the front panel USB3.0 from the motherboard header
  • made sure that the 8pin and 6pin PCIE connectors are plugged all the way in on both ends (to the card, to the psu). used the cables included on my old PSU
- I have not re-seated the RAM, CPU and DRIVES because the pc works on integrated graphics or with the 1050ti.
- BIOS is the latest from 2012 (lol)
- 6700xt lights up when I turn on the pc, cpu fan spins
- Issue occurs whether the HDMI cable is plugged to the 6700xt or not

System Specs:
  • CPU: i7 2600k (stock for a very long time, most of it's lifetime)
  • Mobo: Asus P8Z68 V/GEN3
  • RAM: Team Elite 2x 8GB 1600 MHz DDR3
  • PSU: Thermaltake ToughPower Grand 750W (not the new one with RGB, this is the old model)
  • PC was built on 2012
Questions:
  1. I've seen some posts and videos on the interwebs wherein they are using/benchmarking the 6700xt with a Sandybridge system. I am thinking that the PSU can't reliably power the new card.
  2. Any thoughts on how the PC is not posting with the 6700xt?
Switched back to the 1050ti and reinstalled the drivers for it for now. Going to look for a PC where I can plug this 6700xt to test it or borrow a high wattage PSU. If I can't do that I might buy a new PSU then if that does not fix this issue , a new system in the near future.
 
Realistically, even a random brand terrible 400w power supply would be able to supply enough juice to power a GPU to the post screen. Graphics Cards only demand noticeable power once they are at high utilisation (gaming, rendering etc).

My guess is one of two things:
One or more of the PCI-E connectors on your PSU is bad as the GPU will not post unless all connectors are supply in correct power/voltage

Or
The video card is in fact bad, despite the seller claiming otherwise.
 
sermejong said:
Bought a 2nd hand Sapphire Nitro+ 6700XT which I tried to install in the system below. As the PC tries to POST, it halts on the graphics card which is indicated by a red led on the VGA_LED of the board. It's stuck there and fails to POST.

Notes:
- Seller sent a video of the card itself running furmark before packing it up and sending for delivery. Packaging and the card did not have any damage upon receipt.
- This same system POSTs on integrated graphics or when a Palit 1050ti is on the board.
- I used DDU to uninstall the Nvidia drivers beforehand in anticipation of installing the 6700xt.
- I already tried the ff but to no avail:
  • cleared cmos using the jumper
  • re-seated the 6700xt multiple times
  • tried to boot on all positions/config of the bios switch in the 6700xt
  • swapped with the 1050ti and the 1050ti always worked
  • booting after removing everything plugged on the back of the pc (motherboard) + unplugged the front panel USB3.0 from the motherboard header
  • made sure that the 8pin and 6pin PCIE connectors are plugged all the way in on both ends (to the card, to the psu). used the cables included on my old PSU
- I have not re-seated the RAM, CPU and DRIVES because the pc works on integrated graphics or with the 1050ti.
- BIOS is the latest from 2012 (lol)
- 6700xt lights up when I turn on the pc, cpu fan spins
- Issue occurs whether the HDMI cable is plugged to the 6700xt or not

System Specs:
  • CPU: i7 2600k (stock for a very long time, most of it's lifetime)
  • Mobo: Asus P8Z68 V/GEN3
  • RAM: Team Elite 2x 8GB 1600 MHz DDR3
  • PSU: Thermaltake ToughPower Grand 750W (not the new one with RGB, this is the old model)
  • PC was built on 2012
Questions:
  1. I've seen some posts and videos on the interwebs wherein they are using/benchmarking the 6700xt with a Sandybridge system. I am thinking that the PSU can't reliably power the new card.
  2. Any thoughts on how the PC is not posting with the 6700xt?
Switched back to the 1050ti and reinstalled the drivers for it for now. Going to look for a PC where I can plug this 6700xt to test it or borrow a high wattage PSU. If I can't do that I might buy a new PSU then if that does not fix this issue , a new system in the near future.
Click to expand...
Make sure you have the BIOS set to UEFI .
 
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Reactions: stonecarver
My Asus board has uefi bios. Saw a setting there ‘set priority pci rom’ and i set it to efi compatible from legacy. Rebooted (1050ti was still plugged in) this failed to boot past the splash screen and it only showed the splash screen in like 75% size. Turned off pc and slotted the 6700xt and still the same result. Btw I already replaced my psu with a be quiet pure power 11 fm 750w.

I guess the next step is plugging this card on a more recent system.
 
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