Nighthawk X4S C7800 randomly dropping WiFi (will not connect)

I’m on Comcast Xfinity — just 70/5 service... I had 150/10 at my old address, but when I moved they told me that to get 10 up I had to pay for the 250 tier which I wasn’t going to shell out for... so I dropped to the base package and it’s fine for now. Signal is fine, around -1 downstream power, SNR around 40 and upstream power around 45.

When the modem works, it’s great... but it’s just randomly dropping. Netgear blames Comcast, Comcast blames Netgear. I’m tending to believe that this is a Netgear issue — if it is caused by anything Comcast is doing, it’s an issue that affects this modem but not others.

I spent so much damn money on this thing — ironically to fix another Netgear issue — when I got the Nest cams, my old C6300 started to lock up and freak out regularly — reading up on this, it was due to the Intel Puma 6 chipset having major issues with saturated uploads... I bought the C7800 specifically because it had a Broadcom chipset, and because it has the most memory and processor speed for WiFi if a modem in the consumer class... when it works, it works... but now it just randomly drops the WiFi. I’m SO close to getting a nice separate Asus router and cable modem... but I just can’t justify spending this much money on junk — and don’t want to pawn it off on someone on EBay... I don’t care how much Netgear claims it’s a Comcast problem — it just doesn’t feel like one — that also doesn’t explain why the problem magically fixed itself for a couple months when they sent a new unit. I’m sure Comcast didn’t fix whatever their issue was magically at the same second I plugged in a replacement router...

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chernabog915 wrote:

Worked fine until the last firmware upgrade, and almost every night, after 8pm local time, both 2.4 and 5 channels won't connect, any device, yet all the devices see everything in the neighborhood.

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If we are talking about the C7800 here, then firmware updates come from your ISP. They do not allow Netgear to put out updates.

 

So to get to the bottom of this issue you would do better to chase the ISP. Maybe they can then hassle Netgear.

 

If the ISP  knows that it is pushing out broken firmware, then maybe it can roll people back to a previous version.

 

I assume that you have been through the factory reset process to check that this doesn't fix the issue.

 

By the way, it may not matter, but you have posted your message in the section of this community given over to Nighthawk WiFi Routers. (This is easily done, given Netgear's impenetrable community structure.) Your device is a Cable Modem/Router.

You might get better replies, and find other answers, over in the appropriate section:

Cable Modems & Routers