Some examples provide a non-transitory computer readable medium having instructions stored thereon and executable by a processor of a client computing device to receive, from a server computing device, a unique identifier associated with the client computing device. The instructions are executable by the processor to receive, at the client computing device, user input including a password associated with the unique identifier. The instructions are executable by the processor to send the password to the server computing device for verification. The instructions are executable by the processor to receive, from the server computing device, a data image for installing a desired operating system on the client computing device, and doing so according to a user selection received at the client computing device.