HP DV6-6c38TX Display :: Inbuilt Webcam Not Working As It Should - Fails To Be Recognized After Using

I am an HP DV6-6c38TX  running Windows 7 x64. I also have VMWare Workstation 10 installed.
 
Drivers installed for the webcam are :
 
ksthunk.sys
usbvideo.sys
 
Issues:
 
1) running in normal Windows 7 x64 base machine  (not VMWare)
 
a) after booting the laptop I can use the webcam
b) I run an app to capture an image and it works fine. I then close the app.
c) I open Skype and use the webcam and then Exit Skype. 
d) I open the app again and it says - could not detect webcam device  (assuming this comes from the app)
f) I open Skype and check the webcam and it works. I stop the webcam (Skype still running)
g) I start the app again and now the webcam works
h) I Quit Skype, runthe app again, and it now says - could not detect webcam device
 
That is just for the Laptop running as is.
 
2)  VMWare
 
now in VMWare, this is worse.
 
a) I attach the Webcam
b) I run the same app, but it says - could not detect webcam device
c) I close VWMare
d) Now no app detects the webcam, not the app, not Skype.
e) I check the Device Manager and in fact the webcam now does not even appear in the Dedvice Manager...