My computer is having trouble starting up

[Ritwik]

My fans make a very big noise when my computer is overload, like if i am playing a game, or if many many programs are opened.

That is natural when you're playing a graphics intensive game because your graphics card fan starts rotating, which makes a lot of noise.

 

[blackleopard92]

That is natural when you're playing a graphics intensive game because your graphics card fan starts rotating, which makes a lot of noise.

true, but if this happens if many programs are opened then it's the cpu fan making all that noise.
I suggest u get your machine serviced, and if possible go for big 100/120 mm cooling solns.