No, it has nothing to do with TWC's services.
You have the router improperly set up and must set several ports to forward to the DVR which must be set to a static ip
You need to use a seperate modem and router, TWC's combo's are junk, unstable as to settings and advanced options are greyed out.
Set router DHCP start to 192.168.x.100
set DVR on a static ip of 192.168.x.99 also change port 80 to 380 to reduce hacking
In the router, set up port forwarding rules for 192.168.x.99
port 380 needs TCP,UDP....... uPnp and DMZ do not work, are unreliable
probably ports 3000,3001 and others as wellper the dvr manual
Then go to twc's speed test, write down your public IP.
to get to the dvr it will be that ip :380 for a desktop and probably :3000 or 300 1 for a 4G device,
you need to read the manual.
While TWC res customers aren't allowed a static IP, the Dynamic IP is stable with only different routers or server replacement changing that public IP
Or you can rent space for a "static iP" viewable site and rout the dvr to that site for a monthly fee.
I don't know of many folks other than TWC's marketing staff who would call 30 Down/5 Up internet service Extreme.
Do make sure that the router has WAN and LAN ports rated 1000 base T [Gigabit] ethernet. Don't fall for the labels on the package advertising hundreds or thousands of Megabits over WiFi. Gigabit refers to the WIRED connections modem to router (WAN) and router to wired devices (LAN), using CAT-5e ethernet cables.
A reasonably up-to-date selection for the WiFi capability would be 802.11 AC with 1700 or 1900 Mbps throughput. There are lots of units to pick from, so Google several make/models and read the user reviews before you buy. Some brands have better reputations than others, and some have known issues with specific computer accessories or hardware.
If you are investing for the longer-term, buy a wireless AC router with external anennas. They'll provide the greatest coverage (provided you locate it near the center of your home) and will remain relevant for the longest period of time.
Remember, a router's speed just indicates the theoretical maximum through-put or speed limit of all traffic on the device. So, even if you are only paying for 30Mbps down / 5 Mbps up, you can easily exceed that throughput if information is passing between devices on your network (and not necessarily over the internet). An obsolete Wireless-G router has a maximum theoretical throughput of 54 Mbps, which exceeds the speed for which you are paying, but I cannot recommend that anyone buy into such obsolete technology.
Anything hard-wired to your router will be at the limit of the ethernet ports into which the patch cords are plugged and the cable itself.
I like the APC line of UPS devices, I have my cable modem, router and one computer plugged into an older APC Smart-UPS 700, and if I don't have the computer powered on when the power goes out, the UPS will hold the cable modem and router up for about 4 hours. The UPS also smooths out surges and records the time and duration of power outages. The internal battery needs to be replaced every 4 to 5 years.
If it is TWC provided, the WiFi name will be the Model of the modem/router and the last 2 of the MAC, for example TG852G** for an Arris combo router model 852G where the **'s are the last 2 of the MAC. The default WiFi password is the Model, and the last 6 of the MAC, so same example the password would be TG852G****** where the **'s are the last 6 of the MAC. To be able to change your WiFi password on TWC equipment, login to the modem at 192.168.0.1 and most logins are admin/password or user/user.
If this is your own equipment you purchased, you would need to refer to the user manual for default WiFi login, however you should be able to log in to the device at 192.168.0.1 or 192.168.1.1 or 192.168.100.1.
Right now there is no plans to offer 4k via HDMI from cable boxes dvr's. It will only be via IPTV
4k also requires ethernet not wireless connections no matter what the mfg's claim. Also cheap HDMI cables might not work
Rerun the wireless network setup in the laptop, contact HP support, you have something set wrong, like encryption type in the laptop.
Many bypass the windows wireless setup wizard and use a seperate one for the wireless card, settings are wrong/ conflict.
My Dells do the same thing, the windows settings conflict with the netgear and cisco rf modems You have to use the netgear/cisco setups.
unless they have a multi access point voting mode, they need to be on seperate channels widely spaced and with different ssids.
I assume you are not plugging them into a modem but into an all in one advanced gateway in NAT mode.
AP's are dumb RF extensions of the primary router and don't do any NAT
you can series them provided the first ones ports act as an ethernet switch.
You can also connect routers in series, but every one will need different DHCP assignments tables for your user devices.
You're better off with a hi powered wholehouse wireless router in a central location.