I found a setting on my wireless adapter software to set it to 5Ghz via an Intel wireless option. I wanted to see if the card could connect at that frequency to my router (which I now know it cannot). Unfortunately, the checkbox is now gone and I cannot connect to my wireless network at all. I need to know how to revert the change back to 2.4. I have tried a system restore without success. Using an Alienware m17xR4 with Windows 8. I can connect via Ethernet cable but not wireless. The Advanced option related to Wireless Mode only has the 802.1 options and there are no check boxes or drop-down for the frequency setting.
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