How can I get rid of an error on a canon 550d camera?

Question

Canon

Good day to all!
Canon 550d reflex camera available.
Until recently, it worked stably and flawlessly. This morning I wanted to take him for a walk. The first time I turned it on, I saw an error 80. I turned it off and then turned it on, but the error remained. Returning home, took out the battery, charged it and returned it to its place. After that the error disappeared. But now the display does not work and does not take pictures. At the moment, it is not possible to take it to a service center. I wanted to try to solve the problem on my own, but it did not work. Here I am asking for your help.
ERR 80 - an error associated with the electronics or image data. This code does not carry any additional information.
But, as it seems to me, the service center is waiting for me.

Answer 1

Standard Solution
Turn the camera off, remove the battery and memory card. Allow the camera to sit for approximately 5 minutes. Reinstall the battery and turn the camera on. If the camera turns on and the error is still present, return the camera immediately to the point of purchase for an exchange. If the unit powers on correctly (no error) without the memory card. turn it off and reinsert the memory card. If the error is present after putting the card in, or returns soon after, you will need another card to check the operation and the camera will need to be returned if the specific card is not the problem.
This problem is due to the sd card.

Answer 2

Now it won't turn on at all. Looks like a service center...

Answer 3

Thanks, Puma Thailand , it helped. There was no error 80, the screen did not even blink once. Previously, I associated this problem with the cold, since it first appeared in the cold, and disappeared in the warm subway (the screen does not work, the flash and autofocus work, the indication in the viewfinder works, the mirror does not rise and, accordingly, does not take pictures). But this time the camera was at home in a trunk, and I decided to google it. Solderers hang out on the monitor forum, and this problem (with error 80) was solved differently: “Yesterday I noticed one feature: after an error occurred, the current consumed changes from 400 to 500 mA with the same frequency, i.e. such an impression that the processor works according to a looped program. The flash chip on the lane, which today was carefully warmed up with flux, fell under suspicion. "