i'll have to agree here, if the card is enabled in the bios, but not showing to the OS... just buy a new one. it happens. PCI-E gigabit cards are great fun, if you have a 1x slot on your mobo.
It pisses me off that I have to buy one when the boards 3 months old , it's either not have a computer for 2 weeks due to RMA or use the usb connection or buy a new lan card. I hate to be picky but for 179.00 you would think it would function correctly. The first day I found the cmos battery holder cracked so a small bit of tapes holding that on. If it was a 60.00 board I wouldn't be so mad but 179.00 (actually 184.00) shipped kinda makes ya mad. Fxxxking Gigabyte still a value board company when it comes to support look at this shit
RMA Request Procedures and Guidelines
All RMA request forms must be completed in order to obtain a RMA number
RMA request with missing or incorrect serial number(s) may result in a delayed process or a rejection of request
Any model discrepancy for received items may result in a delayed processing time
Products received with no RMA number may delay processing or refusal
(GIGABYTE will not be responsible for items received without proper information)
No cross shipping or advanced replacements under any circumstances
Products will either be repaired or replaced at our discretion
Replacements may include new or refurbished products
(Replacements will be for the exact or equivalent product)
Average turnaround time will be 2-3 business working weeks upon receipt (applies to quantities not exceeding 20 pieces)
If the information on your request varies from the actual item(s) received, RMA will be based on the actual item(s) received
RMA numbers will be valid for 30 days after issued date
GIGABYTE will provide one way freight via UPS or FedEx ground free of charge
For consecutive violation for No Trouble Found (NTF), a testing fee per NTF board or system may apply