PCI card gets no power

[Peter Koppa]

Hi,

I just got my new motherboard (ASUS M5A97 LE R2.0) and I can't make my PCI wifi card (TP-Link TL-WN851N) boot up. Maybe it's getting no electricity because it isn't shown in the device manager. But if I put my computer into sleep mode, wake it up, surprise, surprise, there's wifi...

So now what I'm doing is that I boot up my PC, sleep, and wake it up in order to have internet.
The error is on both Windows 7 and Windows 8 so that's not compatibility error. Windows 8 runs it with Qualcomm Atheros AR922X driver without any problem. On my other computer this card works well.

Isn't there any options in BIOS which turns off the card when booting up? I didn't find anything about this. When the wifi card doesn't work the device manager shows an unknown device called "Ethernet-Controller" (or Network Controller, I'm using Hungarian Windows which shows Ethernet-vezérlő).

 

[Phillip Corcoran]

"Unknown device" usually points to it being a driver issue (card manufacturer's driver not installed, wrong driver installed).

Remove and firmly re-seat the card in the slot before installing driver power problem could be related to it not being not seated properly all the way down in the PCI slot.

 

[Peter Koppa]

But it isn't shown as unknown device as I've written. It is shown as "Network controller". But after putting it to sleep mode it detects the card, and uses its driver properly. Before putting it into sleep mode the driver is not detected by the system.

 

[romirez]

If you can get the same wifi card for test would be good.

 

[Peter Koppa]

I tested it in 2 other PCs with the same operating system and it worked. I'll test it with another PS. Maybe it's the faulty.