USB scanner will not install

Problem:
- Can't install the driver.

Solution:
- Make sure to remove the Unknown Device in Device Manager.
- (Just in case, disable your Antivirus program and Crashguard)
- Turn your computer off.
- Your scanner should be plugged to your computer.
- Turn OFF your scanner (I know the manual says otherwise, but this worked)
- Turn computer on.
- After boot up, turn scanner ON and wait (takes a few secs) until you get the "Add New Hardware Wizard". It will say: "This wizard searches for new drivers for: Perfection 1200..." Then just follow the instructions of your manual and install the driver.

Note:
I've noticed that if I restart my computer with the scanner on, I will get the Unknown Device back in Device Manager. I have to remove it again and turn off the scanner, (wait 10 secs) and turn it back on. Wait a few secs again and check Device Manager. The scanner will be listed under Imaging Device again, as it should be. To avoid this, turn your scanner off before turning your computer on. Then just turn your scanner on and wait a few seconds before using it... sigh .. this sucks but as long as it works .... :/

Load the twain drivers first before loading the software from disk,also check for an update to the motherboard chipset

1. Make sure that the scanner is not locked.

2. Try the latest driver from Canon.

3. At 1/2 amp of power required, your USB ports may not have enough current available to power the scanner.
Try connection the scanner to a powered USB hub. Make sure that the power supply for the hub provides at least 1 amp.

Chas

First off, straight from the Canon site on this scanner:

How do I install the scanner?

Installing the Software (Windows)

IMPORTANT: With Windows XP/2000, you should log on with an administrator user name when you install or uninstall software programs.

Do not connect the scanner until instructed to do so.

With the computer on, place the CanoScan Setup Utility CD-ROM in the drive. The CanoScan Setup Utility main menu will display.

Click [Install the Software]. Read the SOFTWARE USER LICENSE AGREEMENT and then click [Yes] if you accept the terms. The [Install] window will display.

Click [Start Installation]. You will install six software programs and the Scanning Guide (HTML format manual).

The installation procedure will start. Follow the on-screen message prompts and click [Yes] or [Next] to continue the installation.

When the installation is complete, click [Yes]. The computer will restart.

After Windows restarts, remove the CD-ROM from the drive and store it in a safe place.

Be sure the scanner is unlocked and then connect the USB cable to the scanner and computer.