Pc planté

Bonjour,

voilà ce que mon Pc affiche, le clavier clignote et je ne peux plus rien faire, merci de m'aider


304 – Keyboard or System Unit Error
Make sure your keyboard is correctly plugged into your machine
Plesae ensure that the machine is powered off before removing and replacing any system cables. If it is installed correctly, make sure none of the keys are depressed. If this message persisits, you may need to replace your keyboard.