XP USB Drive not detected or installed fix

[ramesh_kore]

Problem:
Windows XP does not recognize USB Mass Storage Drives
Device is detected and listed with an exclaimation mark in Device Manager

Solution:
After spending hours on internet and reading through numerous posts, I found

following solutions which will definately work (as they worked for me):

1. Delete following file: windows\inf\infcache.1

2. Go to windows\inf folder and see if you have read/write permissions for

following files:
usbstor.inf
usbstor.pnf
If not, open security settings for above files and add your username for

read/write access.

3. Open registry editor and:
Delete following keys:
HKLM\System\CurrentControlSet\Enum\USB\ <read all keys and delete all those

saying USB Mass Storage Driver>

Add following keys:
HKLM\System\CurrentControlSet\Services\Usb
Add a new DWoRD Value and name it "DisableSelectiveSuspend". Give it value 1

4. Make sure you have USBSTOR.SYS file in your windows\system32\drivers folder

(It wasn't there in my case). Just Google using Usbstor.sys and you will find

the file to download. Save it at above location.

Hi....Its still nor working on my PC....please suggest. Any new mass storage device on computer but drivers are not being detected. Please help....