Strange Problem

What did your ISP do after you contacted them. Did the replace the
modem, fixed
the modem from their end, have a tech come to your place to fix it?
Was your modem bought or rented?

Thanks
Dan

Before you scrap the router, have your ISP check your modem for resets. My
network was experiencing the same symptoms. Two routers later, I called the
cable company and they reported my 6 year old Toshiba was resetting 300
times a day according to their logs.

...

Bad router as in your particular router is no longer totally reliable.
This does not mean that another router of the exact same model would
necessarily have the same problem.

However, my one-year failure rate with the low cost routers has been
terrible, I've gone through one to two dozen since I started doing this
in the late 1990's. I've had more problems with Linksys than with
D-Link, and while I used to recommend Linksys, I no longer am able to do
so. I see both failures "out of the box", and also what is more
troubling is failures that develop after 3 to 12 months. These are not
"hard failures" the routers work, superficially. But they "lock
up" and need to be reset periodically (anywhere from every few hours to
every few days). If a router can't work reliably for weeks at a time
without locking up and needing to be reset, it has a problem. And this
kind of unreliability is especially unacceptable if you have Internet
phone service (as we do).

just to be sure, you said a bad router like a bad batch or bad router
like router series is crap and get a different type?

Thanks
Dan