Hello. Please assist. My old pc recently broke down and as cash is an issue right now, I went back to using another old pc I had in the cupboard. The motherboard is an Asus P8Z68-V LX with Bios information as follows = Bios version - - 4105 x64, Build date - 07/01/2013, EC version - MBECD-0006a, ME version - 8.0.4.1441, Southbridge stepping - B3. Now here is the issue, I have a sata 500gb drive I can use as my primary boot drive or a 256gb SSD drive which was the bootable drive in the pc that broke down. However neither are being detected in bios, along with 5 or 6 other drives I have tried. it tell me to look for CSM but there is none nor is there UEFI. The only thing i have seen is EFI compatibilty mode and when i turn it on the pc wont boot. I have to remove the battery and reset cmos. Any help please would be appreciated