Cannon A530 want take picture ,come on everything work want sh

Your card may be full, or else corrupt. Either way, replace it immediately. If it can be read in your computer, copy all the photos to the hard drive. If not, then find a friendly computer-tech who can run image rescue software on it for you.

The image in the LCD monitor will darkn in strong SUNLIGHT. This is normal, is not constitute a badfunction. This iamge will not recorded when shooting still photos, but it will be recorded when shooting movies.Read your owner manual section troubleshooting
God bless you

Try going into the review menu, choose setup and then choose 'reset all' This should re-set all shooting settings to automatic and solve the problem. If that doesn't do the trick, your sensor is probably damaged - not good news - sorry

Press cursor-up on the round cursor pad (marked with a lightning bolt) to change the flash modes. To turn the flash off, select the lightning bolt in a circle with a slash through it.

Sounds like you accidentally pressed the DISP or DISPLAY button on the back of your camera. This manually turns the LCD screen on and off to save batteries. You would then use the optical viewfinder in its place. Try pressing this button one more time to see if it turns back on.

In the shooting mode, press the Func/Set button. Scroll down the icons to the 'drive mode' icon (a square). Then scroll right to the icon showing a circled 2 (2 second delay) or a circled 10 (10 second delay). Press the Func/Set button to select.

To return to normal, use the same procedure, but select the square icon (single shot).

Have you tried their website for troubleshooting? It has been helpful to me with my A530.
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=145&modelid=12914#ModelDetailAct

Find out if there are sound settings in video mode, if not then maybe mic on camera has something covering it and should be cleaned.

first open the cover of the power shot and take photo

hmmmm.

then try this way.

when you are aiming the object press the DISP or DISPLAY button in the camera.

your LCD must turn ON.