@Aman.B 

I also have this issue and have not seen any fix for this problem. I have been having the problem infrequently but it's annoying when playing online games or trying to pay the bills. My router is the Canadian version 5.0. I bought the router back in April 2019 I feel like it should have lasted longer than less than two years.

@Lelwyr 

I wish i had a fix to give u, but i just gave up. Only 3 days ago i got myself a new router.

I would have preferred not going for TP link this time but since i got it from an old computer parts dealer (as oppose to online shopping like with the c7) he told me that he will personally guarantee the 18 month warranty. So i got the C80.

However, i will say that when i unplugged the old one i saw that the TP link adapter was actually connected to one of my other devices and the router was running on some random adapter. Im not saying that it was acting up because it wasnt on its original adapter because im sure when i FIRST plugged it in I would have made sure it was connected to the adapter that came in the box.... but, just in case, u may want to see if urs is running the original adapter or not.

@Kevin_Z 

I have since replaced the router with a d-link. I still have the old router and I'll answer your questions the best that I can. Pretty sure I updated the firmware the first time I encountered the problem. Initially, when the router restarted it was as if it was a full reboot and the lights turned off and then slowly back on about  2 minutes I think. The last couple of times the lights stayed on, the internet one would flash between green and amber and it was only in the log that I saw a factory reset. The network is a simple setup from the Xplornet modem to the router. There are two computers(one wired one wireless) and two phones that are connected regularly as well as a Bose speaker that I use for internet radio. There are two more laptops that are not on as frequently and a PS4 and two tablets. There is generally only a max of 4 devices being used at a time. I don't believe there were any network changes when the problem first began. My husband had bought a new computer and was wireless with it but has since moved it to a wired connection. I believe that the connection type is not PPPoE. There are no access points. It was the original power adapter and I cannot think of anything on the network that would be causing the reboots. I live in an old farmhouse so the power may not be terribly stable but it is connected to a power bar. While checking the firmware I noticed that the numbers correspond with the US version 200268, not the Canadian 190814 and I have always used the auto-update so I have no idea why that would have happened. I may try to play around with it a bit more but since we have a new router I don't know if I'll prioritize it.

I managed to get the firmware to the Canadian version just not sure how I am going to test it without disrupting everyone else on the network.

@Aman.B 

Is it getting warm? Do you have it stitting above your modem or another media device?

It can cause it to restart and it could look fixed when you restart it as it cools down. I suggest try moving it to an area where it can get free old air around the top and bottom.

Worth a try!

@Kevin_Z 

It is an Archer C7(CA) v5. There is a new firmware since I was looking the other day for both  Canadian and US versions. The version that I downloaded and installed is no longer on the website but it was 190814 versus the 200628 that was on the router which is for the American router.

@Kevin_Z 

So I finally got around to installing and testing the newer firmware, although my router does still say it needs an update it currently states that it is the most recent firmware. Unfortunately, the problem seems to persist. My husband is the only one connected to the router now and it isn't in a good spot to see if all the lights turned off and back on when the disconnect happened and there is no mention of it in the system log. I've switched the router over to an access point to see if that helps.