Lka,
I recommend you to update to the latest BIOS version 0100 https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=22814&ProdId=3441&lang=eng&OSVersion=%0A%09%09%09%09%09%09%09%09%0A%09%09%09%09%09%09%09&DownloadType=BIOS
Remove the CMOS battery and leave the system without it for about an hour. Then put it back on and restart the system.
Regards.