Thanks for the reply but I don't think the wireless card causes this cause I just bought this laptop. I have tried wired connection, unlike the wireless connection, it is very much stable. I have noticed that if I am not using my laptop for some time, it disconnects from the internet. Once I refreshed it, it automatically connects. But I am also wondering if this is really the cause since at times I am constantly accessing the net but it disconnects and then connects instantly.