I am having the same problem as deboralbasso. My archer C7 V2 worked flawlessly for almost a year, and is now dropping connections, frequently, at least once a day, and I have to reboot the modem to get it working again. Here are the details:
Model: TP-LINK AC 1750 dual band Gigabit router
When it dies, here are the symptoms I see:
1) All wireless connections including wired connections are dropped.
2) The modem stops broadcasting SSID in both bands.
3) Only of of the two LEDs on console (2.4) flashes on the modem, other one is not flashing.
4) At times, I do see slightly different behavior - The SSID is broadcasting, but wireless clients cannot connect, and they report password is not correct (but the password was correct)
Here are all the things I tried
1) Disabling 5.4 GB band
2) upgrade firmware to latest from support web site
3) factory reset the modem and reconfigure
But none of them have helped so far.
I and tech savvy and can provide any system logs for a support engineer to troubleshoot, please let me know how to collect them from modem. I looked through System tools -> System logs but there is not anything in there that seems to be of significance there. Please provide detailed instructions on any diagnostics you would like me to collect.
TP-Link Archer C7 router crash
Basically, if you only use the wifi lightly it will be fine. But once you max out the wifi, it will crash the router. For me to make the router crash, I just boot up the laptop. Go to a network share, and transfer a large file (1GB+) from 1 network share to another. It'll crash the router within a min. If for some reason it doesn't, then while the file is transferring, go to beta.speedtest.net and do a network speed test while the transfer is going on in the background. It then crashes (almost 100% certainly while doing the upload test). I'm on a:
TP-Link Archer C7 v2 (Canadian version (CA))
Laptop: Dell XPS 9360 (Kabe Lake) - Latest BIOS
Wireless: Killer Wifi 1535 - Latest Drivers (both tried Dell's latest, and Killers Latest).
I can't use the beta TP-LINK firmware cuz I'm on the CA edition...
Seems to me the issue is with the Killer Wifi, not playing nicely, as my Archer C7 had like a 250 day uptime, then crashed over 8 times since xmas with this new laptop. That said, TP-Link (& QCA) is a bit at fault, as their router shouldn't crash when one of the clients is not playing nicely.
TP-Link Archer C7 v2 (Canadian version (CA))
Laptop: Dell XPS 9360 (Kabe Lake) - Latest BIOS
Wireless: Killer Wifi 1535 - Latest Drivers (both tried Dell's latest, and Killers Latest).
I can't use the beta TP-LINK firmware cuz I'm on the CA edition...
Seems to me the issue is with the Killer Wifi, not playing nicely, as my Archer C7 had like a 250 day uptime, then crashed over 8 times since xmas with this new laptop. That said, TP-Link (& QCA) is a bit at fault, as their router shouldn't crash when one of the clients is not playing nicely.
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