Unable to install Canon scanner drivers

The heart of the problem:

If you connected the multi-function printer/scanner to your PC and then

installed the printer drivers/software, the chances are very high

that the printer may work but scanner function will not.

Most scanners or multi purpose printers require

that you install the software before connecting the scanner or printer/scanner.

Step By Step Instructions:

1. Disconnect the multi-function printer or scanner.
2. Uninstall the printer/scanner software and twain drivers using

the Add/Remove programs option.

3. Look/search for folders associated with your printer/scanner model that

contain 'Twain' files, if the folder(s) still exist after the uninstall,

then delete these files and the associated folders.

Note: In the list of files that Search has found you can ignore any

files listed in:

C:\Windows

C:\Windows\system32....

C:\Windows\ServicePackFiles.....

NOTE: In the C:\WINDOWS\twain_32 folder you may have

one or more files. The one "not to delete" is named:  wiatwain.ds

(wiatwain.ds is installed by Windows XP)

Any additional files in this folder were most likely created when you

installed the printer/scanner. Check each files 'Properties' and if has the

brand of your scanner (Epson, Cannon, HP, Etc) identified as the

company/brand, those files can be safely deleted.

On my PC I have my HP scanner's twain file located in:

C:\Program Files\Hewlett-Packard\Precisionscan Pro 3.1\TwainCtrl.ocx

There should be something similar on your PC, so in my case at least

I would uninstall the HP Scanner software and if that 'TwainCtrl.ocx file

is still there after uninstalling the scanner software I would delete it.

I also have a second twain file named 'Twain_32.dll' located in:

C:\Program Files\Adaptec\Easy CD Creator 5\PhotoRelay

4. Check Device Manager and remove any entries if necessary.
5. Create a Restore Point
6. Scan registry using the brand name/make of the scanner as key word for

search. (Delete any entries found, but be certain it's a scanner related entry)

7. Reboot the PC and once again check Device Manager,

it should not show any listings for the printer/scanner.

8. Now reinstall the software and twain drivers.
9. Shutdown the PC.
10. With the PC power off, connect the printer/scanner and then

restart/boot to Windows.

Note: Sometimes it's might help if you try a different USB port if you

printer/scanner is a USB device.

One easy way to test your software installation's twain driver are working,

is to use a graphics editor named IrfanView.

http://www.irfanview.com/

If you download, install and run this software,

located in the menu bar is an option named 'File'.

On selecting the 'File' option you should find an

option (near the bottom of the list) to named:

'Select TWAIN Source', click on this option

and a popup should then display valid Twain sources

for you scanner. If you see your scanner listed,

select it, and then try to scan an object (Photo).

By selecting Twain Source from the file menu IrfanView should load

your scanner's software and then scan.

If you choose the 'Copy Shop' option also in the file menu you have the

ability to bypass your scanner's software and directly scan a photo into

IrfanView. Try the 'Copy Shop' option and let me know what happens.

Note that 'Copy Shop' will list both your scanner's Photo editing/scanning

software and the hardware name (make & model) of your scanner when

you click on Copy Shop's 'Select Twain Source' button.

You should choose the scanner's hardware option.

For instance on my PC the Photo editing/scanner software is named:

'HP Precisionscan Pro 3.1'

The second entry in Copy Shop's 'Select Twain Source' list is my scanner

make and model which shows as:

'WIA-Hewlett-Packard Scanjet 5470C 1.0'

So for me when using Copy Shop I select the second entry when

asked to select a Twain Source.

I then check the 'Show Twain Preview' box.

(I check this option so the scanned image does not go directly

to the printer, but instead is displayed in IrfanView).

Next I click the 'Start' button located a the bottom of the Copy Shop

window to start the scan.

J W Stuart: http://www.pagestart.com

What happens when you try?

Unfortunately the problem persists. It looks as though I shall have to rebuild the PC from scratch and make sure I install the scanner right at the beginning (before even the Service Packs).