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Discussion Starter · #1 ·
Hello everyone

Today, I installed an ECS P4M890T-M2 motherboard in my PC. However, when I turn the PC on, I noticed that I couldn't use my keyboard at all, not even to access any of the BIOS options. Furthermore, my keyboard behaves as if it isn't connected to a PC. If I then allow the PC to boot into Windows, the keyboard still did not work and I found that my mouse didn't work either. Also, my computer doesn't detect a flash drive plugged into any of the motherboard's USB ports but it is detected if plugged into one of the computer case's USB headers.

I have tried using three different keyboards (two USB and 1 PS/2)and two different mice (one USB and one PS/2) and none of them work with this motherboard. The two USB keyboards and USB mouse do not work whether I plug it into the motherboard's USB ports or the case's USB headers. I can't even toggle the Num lock mode for any of the keyboards and the laser in the two mice don't light up either.

I also tried installing a PCI card that adds USB ports to the computer then plug my mouse and keyboard into that. There was a slight improvement in that my one keyboard's calculator function turns on if plugged into the PCI card whereas it stays off if I plug it into the motherboard or case header. I still can't toggle Num lock on the keyboards or see any laser light from the mice plugged into the PCI card though.

Can anyone please help me figure out what is wrong here? Help will be greatly appreciated.
 

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Discussion Starter · #5 ·
@Olryst
That's what I'm afraid of. However, it does beg this question: If the motherboard is faulty, why does the USB keyboard and mouse not work if it is plugged into any of the USB ports owned by the PCI card?

EDIT: Another thing, I tried cleaning the motherboard so that there is no dust on the surface of it and that made no difference.
 
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