a key symbol has appeared on the panel, and i'm unable to turn on the cooker

Frances, November 2017

"The cooker" doesn't actually give much of a clue, does it? There are thousands of cookers, all different.

All is not lost. Cookers normally come with a manual. You could look in yours.

Most reputable manufacturers make their manuals available on the Internet. Should be really easy to find.

jkhfg, November 2017