I have a acer laptop and its web camera is not working,what should i do to fix it.My lappy is not showing it into the device manager.

If this is your problem also please try these solutions

First of all download the camera driver from the authorised website.Like for acer you have to go for acer website to download it.
unless you install the right driver, it won’t work.Also make sure that you choose it  according to your product.

These solutions have been suggested on a forum techarena.in
you can also try this solutions

t has become a common problem for HP pavilion laptops users to face major problems with their built in webcams. This could have been either due to a configuration problem or a problem with your driver.

For Windows Vista users

If you are using a Windows Vista operating system, this is what you can do:

1. Ensure that you are connected to the Internet and that you know the model number of your laptop.
2. connect to the HP website through the link http://h20180.www2.hp.com/…
3. After selecting your laptop model, click “Software & Drivers Downloads”
4. Hence, choose your operating system (in this case it’s Vista).
5. Choose the software update file that you need and follow the instructions.

If you have Vista operating system and have Hp laptop and Vista doesn’t detect Monitor’s built-in webcam with the above solution doesn’t worked for you then you can try
Simplo webcam update from ‘Microsoft windows update’ was installed
a.k.a.
*_PCT_-_Streaming_Media_and_Broadcast_-_Simplo_Webcam_*,
this update messed up the webcam entry in device manager by removing the
imaging device from the list and there is no way to uninstall this
update.

Here is the solution:
-open device manager
-expand usb controllers list
-select ‘Simplo webcam’ device and press uninstall. Check box ‘Also
delete driver’.
-press the button ‘detect hardware changes’. A new imaging device will
appear as ‘Ricoh webcam. Repeat previous steps for this device in order
to delete it as well. Press again the button ‘detect hardware changes’.
The correct device ‘HP Webcam’ will appear in the list. Webcam is now
ready for use.
*_
PS:_NEVER_EVER_INSTALL_PCT_-_Streaming_Media_and_Broadcast_-_Simplo_Webcam,_IT_IS_FAULTY_*