Member Avatar for Elujin

Comp Spec:

HPm7470n
AMD 64x2 4200+
2GB of Ram
ATI XTX 1900 Pro
Windows XP Media Center Edition
Have all windows updates even the optional / hardware ones

Ok so here’s the problem:
My computer has been working fine until yesterday when it just locked up and froze I tried to restart it wouldn't get passes the windows loading screen so since I had nothing really important on the comp I decided to wipe it I have recovery disc that I made when I first got the computer and also a recovery portion on the HD I decided to use the disc because I wanted a full wipe with even the recover portion wiped and rewritten after installing again the computer still froze at the loading screen I then decided to only leave in the needed devices in order to use my computer when I did this it passes the loading screen but once I’m in when I try to hook anything in the has a storage capacity it wont read it gives me "USB device not recognized" for several things I have 2x external drives and 3 flash drives and a PSP none which will read I know all these devices work because I have more then one computer that I can plug them into and they all seem to work in the other also after I've made into windows I fully updated to see if the problem was in a fix in an update both HP and windows have updaters and I've got all of them that where available for my computer still no fix.. for some reason all other USB devices work like my Keyboard/Mouse/Remote Censor/ USB headset so the ports work just not with the HD which used to work for around 2yr with no problems and I didn't do any hardware changes recently that would have caused problems and I also rebooted windows after I found out that it was usb problems with nothing in them so see if it prevent a driver install with the USB or something but still had no luck

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  • Latest Post Latest Post by cguan_77

Dani AI

Generated

A compact troubleshooting sequence focused on the USB mass-storage stack. This thread shows two useful starts: pointed at Device Manager, and flagged Microsoft guidance. The pattern described (human-interface devices still working while storage devices fail to enumerate) strongly points at the Windows USB mass-storage driver, the USB stack, or chipset support rather than a physical port failure.

A practical workflow to follow (described here as steps, not directives):

  • Inspect Device Manager and remove ghosted USB entries (see next item for a quick way to reveal them). Then uninstall all USB host controllers and hubs so Windows can redetect them on reboot.
set devmgr_show_nonpresent_devices=1
start devmgmt.msc
  • Confirm the USB mass-storage service/driver is enabled. Registry location to check:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
Start = 3

Also verify that C:\Windows\System32\drivers\usbstor.sys exists and isn’t blocked by security software.

  • Review System event logs for USB/driver errors to get exact driver names or error codes:
eventvwr.msc
  • Repair core system files and rule out corruption:
sfc /scannow
  • If the problem survives those steps, try a clean boot / Safe Mode (to exclude third-party drivers), test the devices on different physical ports and via a powered USB hub, and install the latest chipset/southbridge drivers from the machine/vendor. A BIOS reset to defaults (or BIOS update from the vendor) can also clear odd controller settings.

Helpful diagnostics: tools such as USBDeview or USBTreeView reveal device descriptors and enumeration status; a Linux live-USB test can confirm whether the hardware itself enumerates under a different OS. Back up the registry before edits and proceed cautiously with driver/service changes.

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Member Avatar for caperjack

did you check device manager to see if any errors show in usb controller section .
right click on mycomputer /properties /hardware /device manager .

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