Failure phenomenon: Computer power-on for self-test, the "CDD Controller failure" error message, press F1 key, sometimes from a drive to boot, but do not recognize C drive, sometimes not from a drive boot.
52 Hardware analysis Processing: From the system prompts error message, it is hard drive control error. Turn off the power, check the hard drive cables and connectors, and be correct. Replace a flat cable.
Continue to inquire: change over cable line, still not, boot failure still.
52 Hardware Analysis Processing: Remove the hard drive power and control cable, start the computer, work is normal.
Continue to ask: the work is normal. This indicates that the computer's motherboard is not a problem, may be a hard drive problem, I removed the hard drive to another working computer to try. The hard drive works fine on other computers.
52 Hardware Analysis Processing: Measure the power supply, and check the computer's power supply label indicated on the power and your actual measured values are consistent.
Troubleshooting: Inconsistent, the original is the problem of power overload, replace a power supply is good.
Power overload causes hard drive drive not to boot properly