Hi there Peter and welcome
I want you to remove power to it longer then 5 minutes, unplug it from the wall socket for 20 minutes so all power is drained
Then connect it and tell me if it now starts please.
Yes, it was a build up of residue power and it needed to be off for some tie, it will be ok now.
If it does go offline, remove the power to it and your computer and wait at least 10 minutes then connect again.
This is usually enough
Great it is now working, If you would like any additional information or assistance, please do not hesitate to let me know.
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