Xbox Red Ring of Death and Connecting Controllers?

So my xbox had the red ring of death on it. I turned it off then turned if back on. Everything is fine. But now my wired controller will not connect. It just keeps flashing the green lights. I do not have a wireless controller. I tried pressing the syncing buttons and nothing happened. What should I do?

Suggestion:

Turn the xbox off, remove everything i.e. cables and hard drive + plug. Leave it like this for a few mins then turn it back on, should work.

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