Help: HP ENVY 17 17-1181NR

rsam8837

Honorable
Nov 13, 2013
10
0
10,560
Specs:

Intel Core i7 720QM (1.60GHz)
6GB Memory 750GB HDD
ATI Mobility Radeon HD 5850
1920 x 1080
Windows 7 Home Premium 64-bit
BD Combo

Hi there, I was wondering if anyone could give me insight about this laptop.
I want to play League of Legends. Will the graphics card allow me to play at high settings with no lag? Why is the speed of the i7 so slow? Will that affect my gameplay?

Also I have read many complaints about overheating. Would a laptop cooler fix this problem? Would I need a special kind of laptop cooler?

I am buying this from a guy online, theres a noticeable dent on the top of the screen but he says everything works fine, except the trackpad is weird. But from reviews, it looks like all the trackpads are messed up. Can I disable the trackpad and just use a mouse?

Additionally, I am reading reviews saying that the Hard Drive (5400 rpm) bottlenecks the performance.
Could someone explain to me what it would effect? I thought that the Hard Drive was just to store your files. Would it just download files slower?