USB Ports are not recognized by BIOS

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afox3699
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I have a Sony Vaio PCV-RS250G with an ASUS P4SD-VL motherboard and AMIBIOS. The USB ports have not been working for a few months. I have installed the XP SP2, and have gone into Safe mode and have removed and then reinstalled the USB Controllers. In the BIOS, I turned off legacy support for USB, but the BIOS does not seem to recognize any USB devices plugged in. When I plug in a USB device the computer does not recognize it, and doesn't do anything. Any thoughts?
KachiWachi
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Are the USB Controllers showing up in the Device Manager after you reinstalled them?
afox3699
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yes...two of them are sharing IRQ 16. I don't know if that is an issue...
KachiWachi
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Might be because they are on a virtual interupt instead of a physical interupt. (Just a guess BTW.)

Do you have a BIOS setting for this?
afox3699
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When I go into BIOS, under USB Configuration, I see the following...

Module Version 2.22.4-5.3

USB Devices Enabled: None

Legacy USB Support [Disabled]
USB 2.0 Controller [Enabled]

Something is causing the USB 2.0 Controllers not to recognize any device. Perhaps it is the driver. Maybe they are corrupted.
KachiWachi
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Reset BIOS defaults for that page?
Denniss
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Do the USB devices show they get power through the connection ? Maybe there's something damaged if they don't get power via USB.
Try to disable USB2.0 controller, maybe it is working as USB1.1 then.
afox3699
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I disabled USB 2.0 Controller, and left the Legacy support enabled, but no change. I think I am going to back out the SP2 and see what that does.
KachiWachi
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Um...did the ports operate with SP1 installed?
afox3699
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At one point they must have...The USB ports worked at one point.
Ritchie
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Since the USB ports are enabled in the BIOS and the BIOS is not recognising any USB devices, I am suspecting the USB ports on the board may have failed.
afox3699
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I booted Knoppix off of a CD, and have been testing the USB ports with a USB mouse, and I am not getting any response. I believe that may add to the credence that the USB controllers are fried.. Not sure how to resurrect them, however, I believe I may have a warranty on the system.
Ritchie
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Thats also what I was almost about to suggest.

Making sure the ports were enabled and then doing a clean O/S install to test the software.

You have effectively just done that and have therefore further narrowed down the problem to the hardware.
KachiWachi
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Can you measure 5V on the USB connector...as Denniss is sorta suggesting?

See -> http://pinouts.ru/data/USB_pinout.shtml
afox3699
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I can definitely measure 5 Volts across the pins (actually it looks like its higher than 5V)...
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