GTX 660 not recognized in x16 only in x8 slot

Testing it in another system and trying another card in the top slot is the only way to know for sure.

Just checking: after you make a change to the UEFI settings (BIOS) you are then going to the EXIT tab and choosing "Save Changes & Exit", correct?

The part of the UEFI that you show in your screenshots is for setting the speed of the PCIe slots. The options should be Auto, Gen1, Gen2, and Gen3. For a 660 that setting should be Auto or Gen3.

To Enable/Disable the onboard graphics that setting should be under Onboard Devices Configuration under the Advanced Tab.

Warning: be sure you have read and know how to reset the UEFI/BIOS from the button on the motherboard before doing this. If you disable the onboard graphics and the card still does not work you will get nothing but black. You will not be able to see the UEFI settings to change them back.

Since you got both of these, the mobo and card, at the same time, it is a little difficult to tell which one could be faulty. If changing the settings in the BIOS and drivers etc don't work, then it could be either component. I couldn't find anything on how to test the GPU other than testing it in another rig. If you have a PC shop nearby, they might have a bench machine they could stick it in to see if it shows up at 16x

Otherwise, there is something you can test for the pci-e slot with a multimeter/voltmeter, or get a pci-e slot tester (just search google and you can find them. not sure if you can get one in Trinidad) :
Desktop Mainboard Motherboard PCI-E PCI Express PCIE Slot Tester

Motherboard PCI-E PCI Express 16X Slot Test Card Tester on eBay!


For a little more money and it might be more readily available, you could purchase a really cheap x16 card and see if it boots properly in that slot. If it boots, that would rule out bios issues. if it doesn't boot, then it's not the card, it would be settings, drivers or the pcie slot: $26 for a Gforce 210 MSI N210-512D2 GeForce 210 512MB 64-bit GDDR2 PCI Express 2.0 x16 HDCP Ready Video Card - Newegg.com


Also, if you have the card in the x16 slot, do you hear any beeps on POST?

Thorsen said:

Since you got both of these, the mobo and card, at the same time, it is a little difficult to tell which one could be faulty. If changing the settings in the BIOS and drivers etc don't work, then it could be either component. I couldn't find anything on how to test the GPU other than testing it in another rig. If you have a PC shop nearby, they might have a bench machine they could stick it in to see if it shows up at 16x

Otherwise, there is something you can test for the pci-e slot with a multimeter/voltmeter, or get a pci-e slot tester (just search google and you can find them. not sure if you can get one in Trinidad) :
Desktop Mainboard Motherboard PCI-E PCI Express PCIE Slot Tester

Motherboard PCI-E PCI Express 16X Slot Test Card Tester on eBay!




For a little more money and it might be more readily available, you could purchase a really cheap x16 card and see if it boots properly in that slot. If it boots, that would rule out bios issues. if it doesn't boot, then it's not the card, it would be settings, drivers or the pcie slot: $26 for a Gforce 210 MSI N210-512D2 GeForce 210 512MB 64-bit GDDR2 PCI Express 2.0 x16 HDCP Ready Video Card - Newegg.com


Also, if you have the card in the x16 slot, do you hear any beeps on POST?

Good links Thorsen, and then he can use the 210 as a dedicated PhysX card

Dude said:

Good links Thorsen, and then he can use the 210 as a dedicated PhysX card

Thanks, and yes that too. although I have not set this up, I have heard there are modified drivers for this setup.