User Manual asus x53e-rs51 - ASUS C90S Notebook

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maybe you need to clean the keyboard see if nothing is inside it i would turn it upside down and shake out the food particles and dust inside the keyboard if the key itself is broken only way is to replace it.

Yes, you could via a VGA splitter, which is readily accessible online and ocassionaly in places like Best Buy.

You can get a CCFL lamp from this WEB site.
LCD screens and Inverters www.lcdparts.net

Check the user manual here:
http://www.manualowl.com/p/Asus/X53E-XR2/Manual/149649

If you are talking about the desktop password there is no work around. Microsoft will not give you a solution other than formatting the pc because of contract agreements they have. So you can pull the HD out buy a HD docking station transfer any info you have wanted to keep then place it back in. Do a factory restore

Uninstall the program then install the it again.

Access the administrator account user to have full privilege on your computer. That includes making changes automatically without interruptions. You may enable built-in administrator account by opening a command prompt in administrator mode by right-clicking and choosing "Run as administrator". Now type the following command: net user administrator /active:yes. After that restart and login to the administrator account profile and access the webcam.

http://www.youtube.com/watch?v=crM27ICi8Ao
watch the video might although not be the same laptop
it is an asus x53e series

hope it helps

Also check the Audio Settings for the MicrophoneTHEN click on Save.