My Laptop Overheats!

My 2-year old 1545 Dell Inspiron and it works fine up until a few months back when it started to shut-down unexpectedly. I noticed that it shuts down when it becomes too hot. So, I made sure to prop it up and turn it off as much as possible. Soon, only after 10 minutes - it shuts down and I can't use it properly. I don't play games with it or use it heavy programs. I only use it for watching videos or facebook. I had to google about the problem and found out that indeed, my lappy overheats prolly because the fan stopped working.

I followed the steps indicated in the manual and lo and behold! I retrieved this much LINT! DUST BUNNY ALERT! My gosh. 2 yrs worth og gunk. No wonder it gave up on me! Good thing my motherboard didn't get busted.