Second card not recognized

[aznghosy]

Hello, I just bought another evga 250gts but for some reason it's not detected on my Computer.
I have a XFX 750a SLI board
Processor : AMD Athlon II X3 435 @ 2900 MHz
Physical Memory : 8192 MB (4 x 2048 DDR2-SDRAM )
Video Card : NVIDIA GeForce GTS 250
Hard Disk : ST3500320AS (500 GB)
DVD-Rom Drive : ATAPI iHAS324 Y ATA Device
Monitor Type : VE228 - 22 inches
Network Card : MV88SE614x PCIe to SATA2 controller Yukon 88E8056 PCIe Gigabit Ethernet Controller
Please help!

 

[Helltech]

Did you attached the SLI bridge? Did you enable try enabling SLI in Nvidia control panal.

 

[aznghosy]

Yeah, but even then the computer doesn't detect the second card, and on the control panel, theres no SLI option.