Not in school.

But i have written a .bat scipt in notepad on an unlocked laptop in a store

Then added the script into the startup folder.

The script would restart the pc after 30 seconds.

shutdown -r -t 30

(R for restart, t for time, 30 means 30 seconds) its harmless… but also super frustrating

Write it in a notepad file. Save it as a .bat file