Internet Access no longer working

Hello there. I have a HP Pavilion Elite HPE Series tower that no longer goes online for me. I'm getting a strong signal, and according to the Network center I am connected. But I can't get online, not with any browser. I don't know why this happened. Nothing changed, it just stopped accessing the internet one day.
The Product Number is: XM558AV#ABA
The Model Number is: HPE - 480t
What do I do?

It is a wireless connection, yes. Every other device in the house works just fine off of this connection. The PC tower itself claims to still be connected via wireless, but is not. I don't know how to connect other than wirelessly, as the cable modem is in another room.

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TC 2 TB A1409 Wan internet connection no longer working but light is still green?

TC 2 TB A1409 Wan internet connection no longer working but light is still green?
My TC and modem have been up and running for at least the last 2 years without any issues.
It recently started acting up and I would have restart it as I had no internet access. All of a sudden My TC stopped connecting to internet regardless of restart. Utility shows i have no internet connection. I had all the correct green lights on my modem. I figured it might be the modem and connected directly to single ethernet port in modem to my mac book and it worked. When I reconnect modem to TC and restart Modem, TC still shows no internet connection in utility even though I'm getting green sync light on TC.
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I'm out of warranty, I have not reset to default yet, Im not sure if I will loose my TC back up data.
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Remy

The Gen4 has some nasty faults.. mostly unrepairable...
If the WAN is gone it becomes pretty well useless at least in its current role as router.
You might still be able to plug it in by ethernet to a LAN port in bridge.
Do try a full factory reset.. always worth a go.
No files will be lost on the hard disk.
The Factory Reset universal
Unplug your TC/AE. Hold in reset. and power the TC/AE back on.. all without releasing reset and keep holding in for about 10sec. The time is not important.. it is the front LED rapid flashing that indicates you are in factory mode.
Release reset.
If it doesn’t flash rapidly you have released reset at some point and try again.
Be Gentle! Feel the switch click on. It has a positive feel.. add no more pressure after that.
TC/AE will reboot after a couple of minutes with default factory settings and will wipe out previous configurations.
No files are deleted on the hard disk.. No reset of the TC deletes files.. to do that you use erase from the airport utility.
Check the ethernet LED is going on.. both on the modem and the TC WAN port.
Do you have any applecare on a computer? If so it might cover the TC.. the rules are complicated but if the TC was bought within 2years before or after the computer it is covered up to max of 3years. You can still get coverage therefore if the TC is over 1 year but less than 2 years by buying applecare now on a computer or an Apple TV which is not too expensive. You can sell off the Apple TV without even opening it.. but use the applecare on it to get your TC replaced.
Only the very first Gen4 will be up to 3years.
Did you have a lightning storm or something btw?? Sometimes the modem can survive and pass the parcel to the TC which seems rather fragile.
There is also a trick to test..
You must have v5 airport utility.. any older Macs, or windows computer you can load on 5.6 utility .. even dual boot/parallels mac.
Go to the WAN setup.. and set the ethernet port to 10mbit half duplex.
Sometimes a damaged port can still manage the slowest speed.. by magic.

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so here is da answer
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Internet Access no longer working

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