WNDR 4300 loses 2.4GHz Radio daily

Do you have neighbours nearby who might possibly have any of those devices I mentioned, they can often have ranges of hundreds of feet?

I bought an N750 based on the Consumer Reports suggestion and this happened to me already. The router wasn't running for 48 hours and the 2.4Ghz signal went completely out after working for about the previous 24 hours. I changed just about every setting imaginable without rebooting and it made no difference. Rebooted and it's back on now. Hopefully that helps diagnose.

Try this link.

Troubleshooting Intermittent Wireless/Dropped Wi-Fi Connections
http://kb.netgear.com/app/answers/detail/a_id/23655

Do you have Guest-wifi or 5GHz-wifi disabled?
My problem disappeared after enabling both wifi-radio's

I am having the same issue. Many times a reboot makes no difference. It seems the 2.4 cannot stay connected to anything anymore. The devices that can connect to both 2.4 & 5 always kick over to the 5ghz. The devices that cannot connect to 5, just disconnect altogether.
I updated the firmware, disabled and enabled wireless settings, and changed channels as well. Still makes no difference.
Help, please.

Our household recently had this same problem and no immediately evident causes. In our case we bought another N750 for testing and also tried an older router. We are both techies (long time online gamers) but this was no simple troubleshoot. My husband was running a media NAS and the software had been crashing the router OS by spamming the network with dhcp (and other) requests. A reboot of router fixed everything until the next spam induced OS crash. This scenario had us stumped and frustrated until we stumbled across a forum post on the NAS software website and connected the dots. PS: We also have had problems with Comcast service dropping signal from modem if we owe them even pennies past due. I have Comcast on automatic bill pay and sometimes I forget to check the invoice and owe them a (small) past due balance. Each time I notice dropped/crappy signals and pay any outstanding balance - the problem miraculously is fixed instantly. This has happened 3 times in last 12 months. Food for thought.

The WNDR4300 is having a new firmware update v1.0.2.78. If the router is not detecting the new firmware automatically, download and manually upload the new firmware from the link

http://downloadcenter.netgear.com/en/product/WNDR4300#searchResults
http://kb.netgear.com/app/answers/detail/a_id/23960

After installing the new firmware. Make sure to take the backup of the current setting of the router and do a soft reset to the router and reconfigured

My router is three days old. And suddenly, on Day 3, it started crashing/rebooting constantly. It was impossible to connect to it for more than 30 seconds - 1 minute at a time before it went through the same cycle all over again. For two and half days, I thought this product was fine. But now I'm thinking I need to return it to Amazon; this is unbelievably bad service from a brand-new product.

FWIW, I did install the latest firmware update as soon as I unpacked the device and got it up and running. That was on May 13, so I'm assuming it was the absolute latest update. I can't verify the actual number, though, because I've had to take the Netgear router offline and put my (former) Linksys router back into service so I can have a connection.

If there's something more I can do on my end to fix the connection before returning this router, please let me know. Otherwise, it's going back and I'm changing brands.

Bob

My 2.4Ghz band also keeps dropping out almost every day. I have to reboot the router. I just updated the firmware from V1.0.2.78 to V1.0.2.80 and will see how this one works out.