Built in iSight is no longer working after hard drive was replaced
I have a 2008 MacBook Pro that has served me well up until recently.
I had my hard drive replaced about a week ago and now I've noticed that my built in iSight is no longer working.
It doesn't work with any application or on any user.
The green light no longer comes on.
I noticed this the other day on my gmail account, no longer showing the camera icon next to my name when i'm online.
So I tried pulling it up on photobooth and ichat etc...no luck.
What should I do?
Please help.
Thank you.
MacBook Pro, Mac OS X (10.5.8)