All lights blinking. No service. CM500

[MayoMane]

All lights are green and the service is still spotty. The ISP isn’t much help. What should I do?

I’ve done plenty of reboots.

[FURRYe38]

Who is the ISP?

What speed package UP and DOWN do you pay for? 

Modem is a DOCSIS 3.0 and maybe getting out of spec with the ISP. Does the ISP still approve of this modem on there network? 

Has a power off for 1 minute then back ON with the modem and router been performed?
Be sure to restart your network in this sequence:
Turn off and unplug modem.
Turn off router and computers.
Plug in and turn on modem. Wait 2 minutes for it to connect.
Turn on the router and wait 2 minutes for it to connect.
Turn on computers and rest of network.

Factory reset the modem? 

Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-mode...

[MayoMane]

Cox

I just noticed they upgraded me to 500mbs speed. Which I never asked for. Think that is too much for the modem?

[FURRYe38]

It's rated up to around 600Mpbs 

Would need to see the cable and event logs...

[MayoMane]

It won’t load the page to get modem info. I tried it last night too to no avail

[FURRYe38]

Try a factory reset by pressing the reset button in back for 10 seconds then release?

What's the brand and model of the external wifi router connected to the CM modem? 

[MayoMane]

I did the factory reset and still can’t access the modem’s page.

whenever I do a power cycle I get an okay connection for a while but then it goes to **bleep** again. I thought it could be a coax cable issue but I’ve replaced it and it’s not helping

[MayoMane]

Oh and the router is a tp-link AC1750

[FURRYe38]

Are you accessing 192.168.100.1 for the modems web page? 

Might try connecting a wired PC directly to the back of the modem with out the router in the middle to see if you can gain access the modems web page.

[MayoMane]

I was actually able to access it through a different browser. Go figure! Hopefully this is what you need

Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	381000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	37	381000000 Hz	-14.4 dBmV	36.3 dB	0	0
2	Locked	QAM256	33	357000000 Hz	-14.2 dBmV	36.4 dB	0	0
3	Locked	QAM256	34	363000000 Hz	-14.2 dBmV	36.4 dB	0	0
4	Locked	QAM256	35	369000000 Hz	-14.5 dBmV	36.2 dB	0	0
5	Locked	QAM256	36	375000000 Hz	-14.5 dBmV	36.2 dB	0	0
6	Locked	QAM256	38	387000000 Hz	-14.6 dBmV	36 dB	0	0
7	Locked	QAM256	39	393000000 Hz	-14.7 dBmV	36 dB	0	0
8	Locked	QAM256	40	399000000 Hz	-14.7 dBmV	36 dB	0	0
9	Locked	QAM256	41	405000000 Hz	-14.6 dBmV	36 dB	0	0
10	Locked	QAM256	42	411000000 Hz	-14.4 dBmV	36.3 dB	0	0
11	Locked	QAM256	43	417000000 Hz	-14.3 dBmV	36.3 dB	0	0
12	Locked	QAM256	44	423000000 Hz	-14.1 dBmV	36.4 dB	0	0
13	Locked	QAM256	45	429000000 Hz	-13.8 dBmV	36.7 dB	0	0
14	Locked	QAM256	46	435000000 Hz	-13.8 dBmV	36.7 dB	0	0
15	Locked	QAM256	47	441000000 Hz	-13.6 dBmV	36.8 dB	0	0
16	Locked	QAM256	48	447000000 Hz	-13.7 dBmV	36.8 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	4	5120 Ksym/sec	36700000 Hz	57 dBmV

[FURRYe38]

OK, 

Power is way too low:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

Ask the ISP to turn up the power to a good middle ground value as seen in the spec. 

Please post the event logs data page as well.