'error 80004002 cannot run preview graph': problems with webcams

Hi, I have two webcams, an internal webcam that came with my dell inspiron 1720 vista home 32 which runs with dell webcam center and an external webcam that runs with AMcap. Both worked fine until last week.

opening the dell web cam center and starting the camera I receive the message: Failed to start video preview, please reconnect your camera.
While opening the external webcam with AMCap I receive the message: 'error 80004002 cannot run preview graph.

I have uninstalled and reinstalled both softwares. I have updated all the drivers. I have updated my nividia graphics card driver and still the same. Can anyone guess what the problem is and what a solution might be? I feel there must be something corrupted at a root level somewhere.

many thanks
Question Info

Last updated July 14, 2018 Views 25,624 Applies to:

If the system file checker found corrupt files but was unable to fix them, you will need to do a Startup Repair:

If you have a Windows Vista installation disc, you need to restart (boot) your computer using the installation disc. If you do not restart your computer from the disc, the option to repair your computer will not appear.

If you have a Windows Vista installation disc:

1.  Insert the installation disc.
2.  Restart your computer.

Click the Start button , click the arrow next to the Lock button , and then click Restart.
3.  If prompted, press any key to start Windows from the installation disc.

Note: If your computer is not configured to start from a CD or DVD, check the information that came with your computer. You may need to change your computer's BIOS settings. For more information, see BIOS: frequently asked questions.
4.  Choose your language settings, and then click Next.
5.  Click Repair your computer.
6.  Select the operating system you want to repair, and then click Next.
7.  On the System Recovery Options menu, click Startup Repair. Startup Repair might prompt you to make choices as it tries to fix the problem, and if necessary, it might restart your computer as it makes repairs.

If Startup Repair is a preinstalled recovery option on your computer:
1.  Remove all floppy disks, CDs, and DVDs from your computer, and then restart your computer.

Click the Start button , click the arrow next to the Lock button , and then click Restart.
2.  Do one of the following:

• If your computer has a single operating system installed, press and hold the F8 key as your computer restarts. You need to press F8 before the Windows logo appears. If the Windows logo appears, you will need to try again by waiting until the Windows logon prompt appears, and then shutting down and restarting your computer.
• If your computer has more than one operating system, use the arrow keys to highlight the operating system you want to repair, and then press and hold F8.
3.  On the Advanced Boot Options screen, use the arrow keys to highlight Repair your computer, and then press ENTER. (If Repair your computer is not listed as an option, then your computer does not include Startup Repair as a preinstalled recovery option.)
4.  Select a keyboard layout, and then click Next.
If that does not work, you will need to reinstall Vista.  Let us know how we can further assist you.
Thank you,

Microsoft Answers Support Engineer
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