Help taking an Averatec C3500 apart to replace the fan.

I've removed all of the screws from the bottom of the tablet, I've removed both the 2 black and 2 silver screws holding the base of the screen. I can see that the case sides are loose, but there is still resistance at the point where the screen attaches to the base of the laptop. I don't want to force the issue and break something, is there anyone out there who can tell me what I'm missing? I have tried searching on line for some kind of step by step but nothing seems to get close with the exception of a YouTube video and even that doesn't quite give me the level of detail I need. I use this laptop/tablet when traveling and it has always served that purpose quite well, so if I can just replace the fan I would be a happy camper (literally)! Help ?

 

Go to http://repair4laptop.org/disassembly_averatec.html and check out the articles there. I was able to take my 2300 completely apart although some of the information wasn't specific to my model.