Bought a laptop from Amazon a week ago and it broke today. Can't switch it on anymore. It doesn't matter either, I'd like to send it back, but important accounts are linked there. Can the accounts be logged out externally without turning the part on?
Smash hard disk with hammer xD, no, if the laptop can't be started anymore because of the hard disk because it is broken, then the data of the accounts are no longer saved.
Yes, it works with Google:
https://support.google.com/...7630?hl=de
There also seems to be a possibility at Microsoft:
For the Microsoft account as follows under the item "Remove a device from your Microsoft account":
https://support.microsoft.com/...08582062e4
On Google under the point "Log out of device that you no longer use":