One of my old classmates asked me to fix the issue that her computer cannot print anything. Thanks to TeamViewer, I could connect to her computer then fix the issue. I found that the Printer Spooler service is down and could not start. When you start it, it started and then automatically shuts down in 2 seconds. Google helped me.
For this case, in short: Remove all files in
After that, the service could start, and all printers came back and worked.