hp prodesk 600: bios power-on fail to start

I have a HP ProDesk 600 G1 SFF with Windows 8.1.

I configured the bios power-on to start in a specific date but it doesn’t start!

 I updated the bios recently: Bios version L01 V02.33 (15-07-2014) but no luck.

I have to start the computer each Friday at a specific hour.

Thanks for your help.