CM1200 Loses Connection to ISP

After about seven months of use, my CM1200 has started losing connection with my ISP(Comcast). This started three days ago.

At first, unplugging it would fix the issue, but within 24 hours I'd have no internet and Comcast wouldn't be able to connect to the device. It will at least sometimes reconnect at some point, though I can't be certain if it's ever happened without a power cycle being done at some point beforehand.

After getting home today, power cycling wasn't working, so I did a factory reset to no avail. Some minutes later while I was going through the support pages on my phone, I noticed my desktop regain connection out of the blue. 

My wife works from home, so this is having a major impact on us. 

Aggregation is disabled.

I have not tried having a computer directly connected for an extended period of time, but the fact that it worked fine for seven months and that Comcast can't connect to it when the issue is active points very strongly to early life failure of the device.