ML110 G5 wont boot missing operating system error

[Janetdeb]

i have an ML110 g5 which after a power cut the night before, wont boot.  It just stops with a black screen saying missing operating system?

I have tried to boot from win server 2008 r2 disk and repair however it cant see the drives...  I checked the bios and all 4 x 500gb drives are listed however it was setup as a raid 10 using the embedded sata controller by someone else!

Then it wouldnt boot at all and it seems the power supply has failed so I have swapped this out and now back to missing operating system message... any ideas how i can view / get to see the array please as there is no option on boot to view config of drives??

quite new to HP servers so any help greatly received

thanks 

[Janetdeb · Accepted solution]

panic over!!!!  I have now managed to gain access to my server... it seems the bios had reset itself when the battery went flat with regards to the raid so I was unable to access the array, however I found where to enable the sata raid in the bios and rebooted and it picked up all 4 drives and allowed me to boot into windows!! :)  very happy bunny

thanks