I forgot please explain various ways to unclip the ribbon.

I bought mine from eBay and just changedn it, and it's all groovy now.

look for replacement keyboard part no and get it.

Then watch videos how to unclip the keyboard and how to unclip the ribbon.

Then comeback and follow these steps here

@ Trung thanx you demysitified removing the keyboard.

Going in from the DVD/CD bay is a master stroke.