HP3300C scanner connected to HP8650 PC.  Scanner successfully scans once or twice and then quits.  No error indications.  Scanning software goes through the motions but no image is presented.  Software unloaded and reloaded but same results.  
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nicholsdlAuthor Commented:
Edited text of question.
try these things below

ISSUE: Universal Serial Bus (USB) scanner quits in the middle of a scan.

SOLUTION: This problem often occurs when the USB is sharing an IRQ with another device. To determine whether your USB is sharing:

From the Windows desktop; select Start, Settings, and Control Panel.
Select System and Device Manager.
From the device list select Computer. A list of IRQs will appear. Universal Host Controller will appear on one of these numbers. If Universal Host Controller is sharing a number with another device, it is recommended that you contact your PC manufacturer for assistance in assigning the USB an exclusive IRQ.
If there are multiple entries, installations made with your USB scanner may have to be removed from Safe Mode, Device Manager's Imaging Devices, in order to properly operate. To correct this, follow the steps listed below:

Restart or reboot your computer
Press the "F8" key once your computer starts to boot up.
The "Microsoft (R) Windows 95/98 Startup Screen" will be displayed.
Select number 3 Safe Mode, then press the ENTER key.
The computer will boot into Safe Mode, this can take a minute or so depending on the speed of your computer. A Desktop warning may appear, Press the return key or choose OK using your mouse. Your display should show that you are in Safe Mode.
From the Windows desktop; select Start, Settings, and Control Panel.
Select System and Device Manager.
Click the "+" next to Imaging Devices.
Highlight the HP scanner in question and choose Remove (Choose OK to the warning), repeat until no more HP scanner entries appear.
Click the "+" next to Other Devices ( if listed, it may not be ) and repeat step 8.


NOTE: Under "Universal serial bus controller" in the Device Manager, if there are multiple entries of the same devices (usually their should be only two for the USB port ) you may need to remove the multiple entries with the assistance of your Computer manufacturer.


After removing the HP scanner software and the Safe Mode entries you will need your HP Scanning Software once you have re-booted your computer. You will be asked to insert the CD ROM for the HP Scanner to reinstall the scanning software.

If you have different issues with your HP Scanner connecting to your USB port, you may need to search for other documents related to connecting to a USB port or Search for the error message displayed on your computer's display.

or try this

ISSUE: The HP ScanJet scanner fails to work when installed, or quits working after it has previously functioned. The scanner may also appear as an unknown device under the USB category in Windows Device Manager.

SOLUTION 1: Problems with specific makes and models of PCs:

IBM 300GL or IBM 300PL computers
USB ports on the 300GL/PL may experience a communication problem known as "jittering." Contact IBM to see about replacing the motherboard.

E-Machine Model 336e
Customers who have this computer have resolved their issue by replacing the E-Machine Model 336e with Model 336i. The root cause of this problem is currently unknown.

Toshiba laptops
Owners of Toshiba Techra, Infinia, and Satellite Pro laptops may experience problems connecting a USB scanner. If the normal troubleshooting steps do not resolve the problem, running the scanner on the USB port may not be possible. If the scanner has another interface option, like SCSI or Parallel, the scanner may work just fine by using that interface.

Quantex computer
Go into CMOS Setup (BIOS), Advanced Chipset, and enable the USB port and the Passive Release. You may need to contact your PC vendor or manufacturer for assistance in making these changes.

SOLUTION 2: Uninstall and reinstall the scanning software. Disconnect the scanner USB interface cable and power. Reboot the PC, connect the power back to the scanner, and then reconnect the USB cable.

SOLUTION 3: If the scanner you have is an HP ScanJet 4100C, 5200C, 6200C or 6250C family scanner, you may need to download the USB patch. Click here, to down load the patch: sj435en.exe. In the Search window type in the file name: sj435en.exe, then press the Search button.

SOLUTION 4: If the scanner you have is an HP ScanJet 6200 or 6250C or HP ScanJet 5200C, switch the scanner lamp Operation Mode from Economy/Energy Star-compliant to Fast Scan.

Open the Control Panel, open Scanners and Cameras, select Properties, and then select Lamp. Change the setting from Energy Save to Faster Scan, then select OK. Restart the PC; power cycle the scanner.

SOLUTION 5: If the scanner is an HP ScanJet 6200 or 6250C or HP ScanJet 4100C, verify that the file HPSJCLAS.DLL exists on the system and is 20 KB in size. If the file cannot be found, or it is larger or smaller than 20 KB, then copy the file from the Drivers directory of the HP CD-ROM to the C:\Windows\System directory on the PC.

SOLUTION 6: Right-click the My Computer icon and select Properties. Click the Device Manager tab, scroll down to Imaging Device, click the plus sign (+), and select the scanner listed. Remove the scanner with the remove tab at the bottom. Shut down the PC, unplug both the USB cable and the power cable from the scanner. With the PC off and the USB cable still disconnected, plug the scanner power cable in and let it completely power cycle before unplugging it. Power cycle the scanner at least five times this way before hooking up both cables and restarting the PC. New hardware should be found on the reboot.

SOLUTION 7: If the scanner is an HP ScanJet 5200C or HP ScanJet 4200C scanner, verify that the file HPSJVSET.DLL exists on the system and is 90.5 KB (for the 5200C) or 92.5 KB (for the 4200C). If the file cannot be found, or is the wrong size, copy the file from the HP CD-ROM to the C:\Windows\System directory on the PC.

SOLUTION 8: In Windows 98, check the Automatic Skip Driver Agent to find out if any drivers (in this case, USB drivers) are being skipped by Windows.

From the Windows desktop, choose Start, Programs, Accessories, System Tools, and then System Information.
Select Tools and then Automatic Skip Driver Agent. If any drivers are listed as skipped, check the box next to the driver, and then reboot the computer.
Check Automatic Skip Driver Agent again. If the USB drivers are still being skipped, contact the USB manufacturer for specific USB troubleshooting.


NOTE: We have seen some instances in the past where having the USB Host Controller share an IRQ with another device has caused the scanner to not be recognized by the computer. This has been especially true when sharing IRQ's with ISA cards and network interface cards. Although it may or may not be a solution, we do recommend that customers investigate the possibility of having the USB Host Controller be on an IRQ alone, if only for testing purposes. This would need to be done with the manufacturer of the computer.



WARNING: Do not change any other settings in the BIOS this could cause other computer hardware not to work.


finally if neither of these work then

uninstall all of the scanner software and then reboot CTRL,ALT,DELETE and then END TASK EVERYTHING except for systray and explorer then reinstall the software


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