alrighty so im "technologically retarded", So I haven't got the faintest idea whats going wrong. But everytime I log KO in roughly 5-10mins (sometimes less) my whole computer freezes up, cant move, cant alt tab, my mouse icon doesnt move...there is practically no response. and I have to turn it off by holding down the power button. Once i've turned it off it won't turn back on for around 2 or more minutes.

At first I thought it was overheating (and it still might be the reason) but tbh im not sure. Ive cleaned the vents, deleted shit I don't need and defragmented my laptop, and done everything that I know possible to fix it yet still doesnt work. Its a HP Pavilion dv6 notebook, and it runs KO smoothly, and has for the past year.

If someone could give me a possible fix, or atleast a link on what might be the problem that'd be greatly appreciated.