Won't turn on

this is fixya we are not associated with rowenta ==you need to make your request thru them we have no access to yours or their accounts

Try draining out water and refilling it. sometimes there are deposits blocking

Customer support of Mr Steam

depends on how old it is, try to rinse it with a water and vinegar solution, this might help

make sure its not clog or the safe is not been kick.

Plugged in? Add water? Check the fuse on the power cable.

To troubleshoot something like this.
1. make sure it's plugged and the outlet is working.
2. Is it getting hot? If not, either the heating element is burned out or not getting power.
3. If it is getting hot check the steam ports for calcium build up (run straight vinegar through it)

Have you tried a descale ?

the hoses sometime kink when hot then get hard in the kink part once cooled down.. you may need to fin the area and warm it up to let the steam pass..

Seems silly... but is it plugged in to a live outlet? Does it have water?