Raid5 is corrupt

Hello,

on an Asrock P67 Extreme 6 Motherboard is a RAID5 with 4x1,5TB Harddisks. (W7 Home Pr. 64bit)

Unfortunately the CLR CMOS button was pressed while running Windows.

Then the system was restarted with wrong BIOS-Settings.

Everything ended up with a corrupt Array. Only two of the four harddisks are within the array. The two others are there as normal drives.

I think the disks themselfs are OK.

Is it possible to recreate the Array?

Thanks