Eva8383 :
http://binarydb.com/driver/Lexmark-X422-v1006.html
THIS THIS THIS is my lappy's webcam driver!!!
Any link from where i can download it?
No, it's not.
Go to Device Manager and click on View.
Select 'Show hidden devices'.
Now does the webcam show up in Imaging Devices? Is it 'Disabled'?
If it isn't, uninstall it.
And uninstall the Lexmark too.
Delete the file of these two drivers as well.
(Do you have Lexmark stuff in your Installed Programs list? You should uninstall it from there too.)
Restart Windows and see if it picks up the webcam.
Did it?