Canon PowerShot S1 IS User Manual (en)

8. Look for files for Canon digital cameras that start with [Oem*]. 
The “*” represents a number, such as 0 or 1. 
[Oem*] files come in pairs of [Oem*.inf] and [Oem*.pnf] files. (For example, 
[Oem0.inf] and [Oem0.pnf]). 
9. Double-click the [Oem*] files to check their contents. 
Double-clicking an [Oem*.inf] file will open it in the Windows Notepad 
program. Look for [;***Canon Camera Driver Setup File****] in the first line. 
Note down the names of these files.
10.Delete the [Oem*] file set.
Delete the [Oem*.inf] and [Oem*.pnf] file for Canon digital cameras that 
you noted down in Step 9.
<Reinstall the driver.>
11.Reinstall the driver with the procedures in Installing the Software and USB 
Driver (p. 10).
Windows Me/Windows 98 
<Check to see if the camera is being recognized as an “other” device and 
delete the driver if it is.>
1. Click the [Start] menu and select [Settings], followed by [Control Panel]. 
Double-click the [System] icon.
This will display the System Properties window.
2. Click the [Device Manager] tab.
Several sets of [Oem*] files may be present in the [Inf] folder. Open up 
each file to confirm that it is an [Oem*] file for Canon digital cameras 
before you do anything with the file.
The Inf folder contains numerous files critical to the computer’s 
operation. Be extremely careful to delete the correct files. If you delete 
the wrong files, you may be unable to restart Windows.