when it happens, do you have a screensnip of the cable connections page and event logs? 

Those help check the connection back to the isp

I have this, I don't know if it's right. my company is xfinity

Your power levels are to high. If you have an amplifier in line, you need to remove it. 

I don't have anything . They put a signal reducer on it and it only lasted two days and then there was no signal. The router is new. Do you think the router is bad? oh something is damaged

the xfinity company has come 2 times to solve the problem and nothing. It says that the signal is good. tell me how to fix that, oh how to lower the levels, oh what a deal for me to come work

How much does the signal have to be for the G34, I don't want to have that problem anymore

It should be between -7.5dbmv and 7.5dbmv. 

You’re above that by a ways. You can try a different signal attenuator or a 3-4x splitter (cap off the unused ports)

Thanks, I'm going to buy a signal attenuator. because the xfinity company has come to my house twice and cannot solve the case