Member Avatar for mikeandike22

Ok my usb mass storage driver has a little yellow warning sign next to it and it isnt working to well so I am trying to find a download online buyt nothing seems to be free can anyone help me out.

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A yellow exclamation on "USB Mass Storage Device" normally means Windows' built-in driver (usbstor.sys) is missing, corrupt, or disabled. As suggested, rolling back is the usual quick check; because already saw "no previous version found", the next steps are to force Windows to reinstall or restore the original system file rather than hunting for random downloads.

Try these ordered actions:

  1. In Device Manager uninstall the USB Mass Storage Device and then use "Scan for hardware changes" or reboot so Windows attempts a fresh install. Check the device Properties -> Details to see the driver path (C:\Windows\System32\drivers\usbstor.sys) and any error text.
  2. Run system file check from an admin command prompt to restore corrupted system drivers: sfc /scannow (XP will prompt for the install CD if needed).
  3. If usbstor.sys is missing, restore it from the XP install media (replace X: with the CD drive): 
expand X:\i386\usbstor.sy_ C:\Windows\System32\drivers\usbstor.sys

Back up the original file before overwriting.

Also check the registry and policies: the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor should have Start = 3 (if set to 4 the driver is disabled). Back up the registry before edits. Run a full antivirus/malware scan; malware sometimes tampers with USB drivers. Avoid downloading isolated usbstor.sys files from random sites — copy from a matching, patched XP install or use SFC/repair install instead.

If these steps fail, a System Restore to a known-good point or a Windows repair install (with the XP CD and key) is the reliable fallback.

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Member Avatar for sittas87

is it a install of a new driver(bad one) that made it behave like thisif it is why dont you roll back driver till you can get hold of a good updated one

Member Avatar for mikeandike22

it isnt i tried and it said no previous version found

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