I have an AMD processor, so in my case this wasn't the issue.
The drive was connected by SATA.
Other system deets:
System Type: x64-based PC
Processor: AMD Athlon(tm) Dual Core Processor 4450e, 2300 Mhz, 2 Cores(s), 2 Logical Processor(s)
BIOS Version/Date: Phoenix Technologies, LTD...