I am connected to verizon fios and then wired to a 8 port linysis to my office. I can not connect Now. It's been working fine for months. Now I get a yellow triangle. Limited or no connectivity

Let's check some settings for the network connections. Click on "start" - "settings" - "control panel" - "network connections".
First we'll check the ethernet connection. Right click on "local area connection" - "properties" - choose "Internet protocol (TCP/IP)" - "properties". In case of not at automatically settings click on both buttons to "obtain an IP address automatically" and "obtain DNS server address automatically".
Click on OK at both windows.
Now we'll check the Wi-fi connection. Right click on "Wireless connection" - "properties" - choose "Internet protocol (TCP/IP)" - "properties". In case of not at automatically settings click on both buttons to "obtain an IP address automatically" and "obtain DNS server address automatically".
Click on OK at both windows.

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Stelios
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