Boost up your system

increase the virtual memory size..
it must be atleast 2 times the actual ram installed on the system

it can be done by:
mycomputer->rt.click->property->advacne->setting(performance)->advance->virtual memory


other two simple steps..
1.clear the temp folder by
typing %temp% in run menu..
2.
clear the prefetch i.e system prefetch
go to run menu n type %prefetch% n then delete the content

Remove unwanted programs from startup
for eg: intel display graphic control