Thanks for the the additional information. I’d like to do a couple of tests to narrow down the symptoms. First, unplug all the cables from the hub except the power adapter to the wall, including the cable to the computer. Does the blue light stay on?
If the blue light doesn’t stay on when the power adapter is the only thing connected to the hub, then either the power adapter has died or there’s no power in the outlet.
Check these things out for me and we’ll figure out next steps. If you do find that there’s power at the outlet but no power to the hub, or power to the adapter but the light doesn’t come on, just send your Amazon Order ID over to firstname.lastname@example.org and we’ll get you fixed up.
Thanks for your troubleshooting,