i have encountered this problem more than 10 times but have solved it by doing the hP Recovery System,

any ways if i have downloaded something and stored it on my computer when i try starting up programs a black box will appear and disapear saying program to big to fit in memory once this happens the whole entire stystem will do it by then i have to do the hp recovery

any tips on how to stop this?
or is it my computer which is just 5 years old =/.