OK lets check the System Files and see if a USB controller may not be working correctly.
and then to Run
("Start Search" in Vista),
Type in: sfc /scannow
(Enter in Vista).
Have Windows CD/DVD handy.
If System File Checker (sfc)
finds any errors, it may ask you for the CD/DVD.
does not find any errors in Windows XP,
it will simply quit, without any message.
you will receive the following message: "Windows resource protection did not find any integrity violations".
For Vista users ONLY: Navigate to C:\Windows\Logs\CBS
folder. You'll see CBS.log file.
Usually, it's pretty big file, so upload it to Flyupload
, and post download link.If you don't have Windows CD....
This applies mostly to Windows XP
, since Vista
rarely requires use of its DVD while running "sfc"
Note This method will not necessarily work as well, as when using Windows CD, because not always ALL system files are backed up on your hard drive. Also, backed up files may be corrupted as well.
and then Run
type in regedit
and click OK
Navigate to the following key:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup
You will see various entries Values
on the right hand side.
The one we want is called: SourcePath
It probably has an entry pointing to your CD-ROM
drive, usually D
and that is why it is asking for the XP CD
All we need to do is change it to: C:
Now, double click the SourcePatch
setting and a new box will pop up.
Change the drive letter from your CD drive
to your root drive, usually C:
Close Registry Editor.
Now restart your computer and try sfc /scannow
again! Thanks to Broni for the instructions
Revised and Simplified:
Do you have a valid XP CD?
If so, place it in your CD ROM drive and follow the instructions below:
- Click on Start and select Run... type sfc /scannow (note the space) (Let this run undisturbed until the window with the blue progress bar goes away)
- Which stands for S
retrieves the correct version of the file from %Systemroot%\System32\Dllcache or the Windows installation source files, and then replaces the incorrect file.
If you want to see what was replaced, right-click My Computer and click on Manage
. In the new window that appears, expand the Event Viewer
(by clicking on the + symbol next to it) and then click on System