Usb malfunciton anything i put in my usb port won't work like my printer,webcam,digital cam. i have see this error that said "acpi irq steering for pci irq steering error" it said that driver on this doesn't match or wrong driver. I had reformat my hard drive and installed windows 98 but the original OS is windows xp professional,and after that this error occurs,my usb port won't work anymore.

Open device manager. (Settings, Control Panel, System)
Expand system devices.
Open PCI Bus, then IRQ steering.
This should generally be enabled, but disable it if it isn't working for you.

When you restart the computer check the system bios (Usually "Press <del> to enter settings" to see whether you are allowing the operating system to control devices through Plug and Play. Either setting may work, but setting to Plug and Play Operating system is generally better with IRQ steering enabled. Try all combinations.

Although MS no longer supports Win98 you may find that Windows Updates still works. You should take whatever updates are available.

Usb