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Motherboard can't see HDD and DVD drives

by Gordon
(Anchorage, AK)

After replacing the non-funtioning(shorted out during a power spike I think) Power Supply the ASUS P5LP-LE motherboard is not seeing the HDD and the Optical Drive.

I have reseated the connectors, changed the connectors and connected the drive to an alternative system to verify they are still funtioning.

I have verified the power cord from the new Power Supply is on and correctly sending the right voltage.

BIOS is running fine but I did have to reset the time and date. Replaced the battery (with a new out of the package CR2032 3v).

1. Power cable to other units downstream from Optical Drive are powered up but still not being read by the CPU

2. SATA cable to the HDD is good (tested earlier on another sys.)

Is the mother board the source of the problem?
Thanks for all you do to help.
Gordon

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Motherboard can't see HDD and DVD drives

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Jul 15, 2011
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Motherboard failure
by: Suupor

Hello Gordon,

If the drives work in another computer without problems and you have reseated the cables I would say the motherboard took part of the power strike that killed the power supply.

Normally when a surge goes through the power supply most of the components are damaged.

You have done all the steps I would have done and my conclusion is the two controllers (IDE and SATA) are damaged.

If you can't afford a new motherboard you could temporarily use add on cards to get the hard drive and CD/DVD drive operational.

There are add on cards that have both IDE and SATA controllers on one card. (See my hardware review section for one to stay away from).

Hope this helps ...

Jul 16, 2011
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Motherboard can't see HDD or DVD Drive
by: Joe

Hi Monte & Gordon,could you clarify whether you had to correct the clock before or after you changed the battery.

Also check http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c00590499#A2. This will explain how to reset the CMOS in the BIOS (not sure if you have done this already).

You say the BIOS is working O/K but don't explain how you come to that conclusion. If you check the method we used to trace the fault causing my laptop keyboard to stop responding.

The last thing I wanted to do was Re Flash the BIOS as I at least had a working Laptop and as Monte points out I could have ended up with nothing working.I think you are in the situation where that does not matter as you have a non working system.So you have nothing to lose by trying to Flash the BIOS.

Also I would try building the system back up with the minimum components incase some other components are causing any load on one of the Buses. Perhaps ASUS mother boards are suspect to BIOS corruption.

Regards Joe.

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