Can't scan on HP Photosmart C4380 even tho printing works fine

I am sick and tired of the problems i have with this PSC, but i have found a scanning solution and thought i would share it.

Use Microsoft Paint. It's not the best application in the world, but you can insert a scan from a scanner in the 'file' menu. :0) The scans are not of the best quality, but i'm grateful i can scan at all with this useless PSC.

Try scanning without HP imaging software

HP Photosmart C4380 Direct Scan button doesnt function in VISTA
Use the built-in feature of the Windows operating system, called Windows Image Acquisition (WIA), instead of the HP software to scan. Follow these steps to perform a WIA scan.

1. Make sure that the product is on and that the cable is correctly connected.
2. Click Start , and then click Control Panel .
3. Click Printers and Other hardware , and then click Scanners and Cameras .
4. Look for an icon representing the product, and then review the following information for further instructions:
5. Double-click the icon to start the Scanner and Camera Wizard . Follow the on-screen instructions to scan images or documents to the computer
6. If the WIA scan was successful , use the Scanner and Camera Wizard to scan instead of the HP software. To use the HP software, continue to the next step to continue troubleshooting. However, it is not necessary to do so.
7. If the WIA scan was unsuccessful , continue to the next solution.
8. Fully uninstall and reinstall the HP software Follow these steps to completely uninstall and then reinstall the HP software. Step one: Uninstall the software Use one of the following methods to uninstall the software. Method one: Uninstall the software using the product CD If the product software CD is available, follow these steps to uninstall the software. Otherwise, skip to the next method.
   1. Insert the software CD into the CD-ROM drive on the computer.
   2. If the Welcome installation screen appears, click Exit to close it.
   3. On the Windows task bar, click Start , and then click Run ( ). The Run dialog box appears. Figure 4: The Run dialog bCan't scan on HP Photosmart C4380 even tho printin - c01463551.gifrc="/uploads/images/c01463551.gif" alt="c01463551.gif" class="h_mi" />
   4. Click Browse . The Browse window appears.
   5. Navigate to the CD-ROM drive that the software CD is in, and then double-click the drive.
   6. From the list of folders and files on the CD, double-click the Util folder.
   7. From the list of folders and files inside the Util folder, double-click the CCC folder.
   8. From the list of folders and files inside the CCC folder, double-click the Uninstall_L3.bat file or Uninstall_L3_64.bat if a 64-bit operating system is installed on the computer. The Browse dialog box closes, and the path to the Uninstall _L3.bat file appears in the Run dialog box. Can't scan on HP Photosmart C4380 even tho printin - c01463552.gif Uninstall file path in the Run dialog box
   9. Click OK . The software uninstaller opens in a command prompt window.
   10. Press Enter to begin the uninstall.
   Method two: Download and uninstall the software If the software CD is not available, follow these steps to download the software and then uninstall it.
   1. Click here to go to the Software & Driver download page on the HCan't scan on HP Photosmart C4380 even tho printin - c01425574.gif> .
   2. Type the product number in the search field, and then click Submit ( ).
   3. If necessary, click the link for the product model number.
   4. Click the correct operating system.
   5. In the Driver section, click HP Full Feature software/driver , and then click Download only .
   6. When the File Download - Security Warning dialog box appears, click Save .
   7. Save the file in a location that is easy to remember.
   8. When the file finishes downloading, double-click the file to extract it.
   9. On the Windows task bar, click Start , and then click Search ( ). The Search Results window appears.
   10. In the Search Results window, click All files and folders .
   11. Click More advanced options , and then select Search hidden files and folders .
   12. In the All or part of the file name: box, type Uninstall_L3 , and then click Search . When the search is complete, the file appears in the Search Results window.
   13. Double-click the Uninstall_L3 file, and then follow the on-screen instructions to complete the uninstall.

It's a work-around, but use Task Manager, find the svchost.exe that's running and kill it. Wait a second and scanning will start. Leave hpqkygrp.exe alone.

I have had this problem numerous time with my C4380.
I found that if I rebooted the printer and then the PC it would then reconnect to one another and print.