I am using MSI GX620 laptop and I have got virus in my laptop before some days and because of that I have formatted my whole hard drive and after that I have installed windows 7 again in my laptop. now after doing that when I start the laptop from that time my laptop boot very slow and sometimes it fails on boot screen only. Now I donít know what to do with this problem. Please give me some solution regarding this. Amy help will be appreciated.