hd 4400

Hi ... I recently bought a 17" Dell Inspiron 7737 with tochscreen laptop ... Specs: i7 4th generation 16 GB ram 1 TB HDD intel HD 4400 2 GB Nvidia GT 750M GDDR5 Win 8.1 Pro The problem i am having is the right side of my Screen (almost 1/4 of the screen) dims ocassionally ... it got me worried...