I'm running WinXP HomeEd. My scanner (HP Scanjet 3300c) was orginally used with Win 98SE. I got the updated disc from HP, verison 3.02. After loading it I still get errors - "Failure to communicate with scanner [1215]" and "Digital Signature Not Found"or "error occured during the move data process: -105" "Component:OCR Engines\Caere OCR Engine Supporting Files". The scanner is hooked-up properly. The scanner does not work in any kind of operation- scan/copy etc. Need a little help here or any indication what's the problem is. Thanks

Please follow the steps listed below to uninstall the HP Precisionscan
LT and reinstall it in Windows Safe Mode, avoiding any software or
driver conflicts.




Step 1: Disconnect the scanner from the computer system

1. Shut down the computer system.
2. Disconnect the scanners power cable.
3. Disconnect the USB interface cable.
4. Turn on the computer system.

Step 2: Delete all of the remaining files installed by the HP
Precisionscan LT Software

1. Open the file search window. Click Start, Search, then For Files
or Folders. The Search Results window will open.
2. In the Named field type: Scanjet*
3. In the Look in field, select (C. Make sure there is a check
mark in the Include subfolders box.
4. Click Find now or Search now to start the search.

* Highlight and delete all files found.
* Repeating Step 3, items 2-4, find and delete the
following files:

hpsc*
hpsj*

5. Close the file search window to return to the Desktop.
6. On the Desktop, double-click the Recycle Bin icon.
7. Click File, then click Empty Recycle Bin.

Note: If you are using the downloaded file, skip this step.

Step 3: Copy the installation files to the Desktop

1. Insert the HP Scanjet Scanning software CD-ROM.
2. Exit the automatic installation menu when it appears. Click
Start, then My Computer.
3. Right-click the CD-ROM drive letter, then click Explore. Windows
Explorer will open.
4. Right-click the English folder. Click Copy, then close Windows
Explorer. Windows Explorer will close and the Desktop will
reappear.
5. Right-click the Desktop. A popup window will appear. Click
Paste. The Copying window will appear and copy the English folder
to the Desktop.

Note: The SETUP.EXE file may be present in the English folder.
To identify which folder needs to be copied from the HP
Scanning software installation CD for your Scanjet model,
visit the following Web site.

www.hp.com/cposupport/scanners/support_doc/bps03988.html

Step 4: Restart the computer in Safe Mode

1. Click Start, then Run. The Run window will open.
2. In the Open field, type MSCONFIG and click OK. The
System Configuration Utility window will open.
3. Click the Boot.ini tab.
4. In the Boot Options section, select /SAFEBOOT and Minimal.

Note: Be sure to uncheck /SAFEBOOT after the installation has
been successfully completed.

5. Click OK. The System Configuration windows open. Click Restart.
The computer system will restart in Safe Mode.

Step 6: Install the HP Precisionscan software in Safe Mode

The computer system is now running in Safe Mode in Windows XP.

Note: If you are using the downloaded file, double click it to install
the software and go to point 2 in this step.

1. Double-click SETUP.EXE. The file may be located in the English
folder. Follow the screen prompts to install the scanning
software.

Note: For more in-depth Safe Mode installation instruction, visit
the following Web site.

www.hp.com/cposupport/scanners/support_doc/bps03988.html

2. After the HP Scanjet scanning software has completed installing,
shut down the computer system.
3. Reconnect the scanner to the computer system using the USB
interface cable, then plug in the scanners power cord.
4. Reconnect the scanner power cable to the scanner and power outlet.
5. Restart the computer system. The New Hardware prompt will appear
upon restarting and install the necessary drivers.

The HP Scanjet scanner is connected, by a USB cable, to the computer
system and then the scanner stops working unexpectedly, or the scanner
may appear to work fine when Microsoft Windows XP first starts up but
later stops working.

This issue occurs because by default, Window XP tries to disable USB
port when the HP Scanjet scanner is not in use to save power. The
scanner fails to wake up when called. To fix this issue, disable power
management on the USB hub.

1. Click Start, right-click My Computer, then click Properties. The
System Properties window will open.

2. Click the Hardware tab, then the Device Manager button. The
Device Manager window will open.

3. Double-click the Universal Serial Bus controllers branch to expand
it.

4. Right-click USB Root Hub, then click Properties. The USB Root Hub
Properties window will open.

5. Click the Power Management tab.

6. Remove the check from the Allow the computer to turn off this
device to save power check box.

7. Click OK, and close USB Root Hub Properties window.

8. Close any other open windows.

Visit the Microsofts Web site if your computer does not shut down properly if selective suspend is enabled.

http://support.microsoft.com/default.aspx?scid=kb;en-us;q315664

or try this

Just deinstall everything via InstallShield and manually delete all HPSC* HPSJ* entries in registry. then plug off then scanner, reboot the computer and plug on the scanner and follow the intructions by Windows XP. This will install the XP driver und join the scanner to Microsoft PictureIt. With this configuration the scanner works fine! A clear evidence that the software is buggy and not the scanner neither XP.

Thanks Drivers, I'll give this a shot. I got the (supposedly) update disc from HP but it doesn't work. So I'll give this a crack, cheaper than gettin' a new scanner. Thanks again.

Drivers, I tried all that you threw at me. None of it worked. I get this driver signing error. I contacted HP via email and they gave me some options to try but none of that worked either. There is nothing wrong with my usb cable, cause I tried it out on my printer and it prints fine. So it you guys can't come up with anything else I guess I have to get another scanner. Got any recommendations for an all in one scanner compatible with XP.

Thanks again,
Pete