My Camera When I turn on my camera (canon power shot A420) the LCD screen is blank and reads 'Lens Error, Restart camera'. Can you please help me resolve this problem! Thank you

Try gently turning an knocking the cameras lens..i had the same problem an all it was,was the rubber protction guard had got stuck which is why the lens would not retract back into its position.so try twisting the lens gently or tapping it.well thats what i did

Not necessarily true. This problem is generally caused by dirt or sand getting into the lens worm gear. Try these in order: 1) turn off the camera, remove the flash card and batteries, then reinsert them. 2) turn the camera on and off with the AV cable inserted, 4) rap the camera with the palm of your hand, 5) gently pull on or push close the lens then try to restart. If all the above has not worked, AND if the A4XX camera is no longer under warranty, AND if this problem did not result from the camera being dropped, here's how to fix it, and it's relatively easy: http://homepage.mac.com/jpelling/page0/page0.html By the way, don't know Justin, but he did a very nice job showing how to open the camera case and clean out the grit and sand from the camera lens drive gear. Make sure you send him an email to thank him

The lens is bent or otherwise stuck inside the camera, unless you replace the lens, there is not much you can do i'm afraid