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USB drivers fail to load

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2 replies

by regall

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My USB ports have recently failed to operate. There is the yellow! in Device Manager. The error message says, "NTKERN.VXD device loader for this device could not load the device driver."
I've tried: updating the drivers; putting the USB ports ontheir own IRQ; doing a registry check. I've also tried restoring an old registry copy, but the current Win won't start with the older registry. My sense is that there is some file that is preventing proper load because the file is either wrong or corrupted.
OS is Win98se
Computer is Abit KT7A Raid
I don't believe its a hardware issue because Win recognizes the ports when I delete them in Device Manager and then restart Windows.
I'm trying to avoid a complete reformat and reinstall.

2 replies

by thechas

1. Start by going into BIOS setup, and manually setting the CPU speed and Multiplier.
Set the FSB to 100MHz
Set the multiplier to get your rated CPU speed.
Check out the KT7 faq at www.viahardware.com for more information.

2. Then, install /re-install the latest VIA 4 in 1 driver. www.viaarena.com

3. If you still have problems, make sure that all of your DIMMs are compatable with each other.
If one is a lower speed or CAS Latency, place it in slot 1 (rows 0/1)
VXD problems are often the results of memory issues.
I have started using all the same make and age RAM to assure compatability.

The next step, would be to;
a. remove the USB ports and Hub from device manager.
b. delete the associated VXD files.
c. allow windows to re-create them when you reboot and windows re-installs the usb hub and ports.

Chas

by regall

I had already taken all these steps. On further inspection, Device Manager does not report that Win98 has assigned an IRQ to the USB Controller, even though there is a free IRQ available.

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