Dual Band NIC Won't Connect to 5 GHz Signal, Only 2 GHz

[Stelios1]

I recently bought a Linksys AC1200FE router so I could take advantage of its 5 GHz ac capabilities. Soon after buying the router I realized that I did not have a dual band NIC, so I upgraded to an Asus PCE-N53 wireless card, which is a dual band wireless card. I can not find my 5 GHz signal, and my PC is directly one floor up from my router so I do not suspect a range issue. My old laptop can connect to the 5 GHz network as well as my iPhone. I am running Windows 10 Build 9926 (maybe the problem?) in beta. Also, my connection to the 2.4 GHz signal seems to have gotten WORSE since upgrading to the new wireless card. Any help would be much appreciated. Thanks very much.

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System Information
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Time of this report: 3/13/2015, 23:28:39
Machine name: RUPAUL
Operating System: Windows 10 Technical Preview 64-bit (10.0, Build 9926) (9926.fbl_awesome1501.150119-1648)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: To be filled by O.E.M.
BIOS: BIOS Date: 08/06/13 14:13:08 Ver: 04.06.05
Processor: AMD FX(tm)-6300 Six-Core Processor (6 CPUs), ~3.5GHz
Memory: 8192MB RAM
Available OS Memory: 8156MB RAM
Page File: 2942MB used, 8157MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Not Available
DxDiag Version: 10.00.9926.0000 64bit Unicode

Name: ASUS PCE-N53 300Mbps 11n dual band Wireless PCI-E card
Device ID: PCI\VEN_1814&DEV_5592&SUBSYS_851A1043&REV_00\4&5DC256B&0&0028
Driver: C:\WINDOWS\system32\DRIVERS\netr28x.sys, 5.00.0048.0000 (English), 1/20/2015 07:44:51, 2512016 bytes
Driver: C:\WINDOWS\system32\drivers\vwifibus.sys, 10.00.9926.0000 (English), 1/20/2015 07:45:28, 25600 bytes

 

[kanewolf]

Since you are on Windows 10, there is no guarantee that the ASUS driver works. I bet if you Google Windows 10 compatibility you will find your answer.

 

[g90814]

edit: oops different adapter (I have ASUS USB-N53) but same issue, no 5Ghz

 

[g90814]

I found the solution for mine, it may work for yours: http://www.tomshardware.com/answers/id-1693495/asus-usb-n53-detect-5ghz.html

Basically, uninstall the device in device manager, and install the drivers from mediatek instead.

I could see my 5Ghz SSIDs after installing these drivers: http://www.mediatek.com/en/downloads/ (mine was the top link for USB, yours might be the PCIe drivers at http://www.mediatek.com/en/downloads/pciert2790rt309xrt35x2rt539xrt3290mt7630/