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USB devices no longer detected, why?
Config:
MicronPC Millennia AMD Athlon upg to 2.13ghz GA-7DX Rev 2.2 BIOS F2C Windows XP SP2 Problem: Here is the chain events that led to the problem. First, I have 2 different USB SAN disks and system always detected them when conn to front of the tower. I also had a USB Logitech web-camera and a USB Epson CX4600 all working fine. The CX4600 had a known problem with the ink-cartridges, sw said it was low or empty where it still have enough ink remaining. I received a new CX4800. I then uninstalled all Epson sw, rebooted, and connected the CX4800. Inserted the new Epson CD sw that contained drivers & sw, but it did not detect the CX4800. Tried de/re-attaching the USB cable at the printer end, system did not detect any new devices. I also tried to conn the USB printer to 2 other different USB ports, same problem. I then tried to attach my SAN disks, still system did not detect any new devices. I detached all USB devices and only tried the SAN Disks, still problem. It seems Plug n Play does not work or got disabled. I checked Device Manager and it shows the following with no red/yellow: Universal Serial Bus Controllers - USB Root Hub - USB Root Hub - VIA Rev 5 or later USB Universal Host Controller - VIA Rev 5 or later USB Universal Host Controller I then removed all 4 items above by clicking on it and choosing Uninstall. I reboot, it detects them but does not detect the SAN disk still attached. I tried the web-camera device alone, same problem. What is happening, any suggestions?? THANKS! p.s. I attached the the SAN disks, Epson printer and webcamera to a Gateway 500mhz system running Win2000 and it detects them. |
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