PowerEdge 2850 Raid Controller Problems

Hi to all,

I had like other people the message "memory/battery problems were detected".

First I try to change the memory but I got the wrong one, so in the startup, it asks me if I wanna run through SCSI because my memory is not compatible, so I said yes, because my server is critical for me.

But know I found a good memory and also a good battery, so I want to good back to raid boot configuration, but I don't know how to it.

Do I have to be in the BIOS, "integrated device = raid ?"

Does is it mean that I will lose data ? because when I put this setting, when it boots, it says that I may loss data.

Config : 6 disks (3 mirrored)

PS : I can't do a "Control-M" on the startup, it is not displayed anymore..

Please help me ! 

Regards,

Baptiste