BSOD every hour or so

I'm getting BSODs approximately every hour or so, and I think my hard drive or cables are the issue. After the BSOD, one of my hard drives is sometimes unrecognized until a few boots later. The BSOD error messages vary, but the most common one is 0x0000007A (0x0000000000000020, 0xFFFFFFFFC000009D) The computer seems to be working fine aside from the BSODs. Memtest86, FurMark, CPU-Z,...