so i recently received my lenovo y50 its has 8 gigs of ram and about 47% of that is used while on the desktop also whenever i open up chrome or explorer the cpu spikes to 100% its not much of a problem its just that this is a brand new computer it has an i7 4 core processor at 2.50 ghz's and it shouldn't spike to 100% also it only recently started doing this.