What’s wrong with my Dell Latitude D610??

I’ve had my laptop for a little over a year now, and the prolem started 5 months ago. After 5 minutes of turning it on, everything -the mouse, the keyboard- would freeze, and the interesting thing is, it would go back to normal if i put some pressure on the lower left part of my laptop.

It got worse and worse. Now, i literally have to lean the weight of my entire leg on it, and put pressure on the upper right corner for it to work. I know doing that probably made it worse, but please help!