<div class="gmail_quote">On Tue, Jul 6, 2010 at 22:32, nagendra prasad <<a href="mailto:nagendra802000@gmail.com">nagendra802000@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi All, This is just off topic, but I have just noticed that my laptop is running from 3 days and 2 hrs. My question is will it affect on my laptop's hardware compenets or not? Will it be harmful for a laptop or a desktop to run for a long time? I know it depends on temperature, but its raining from past 4 days in Hyderabad so its pretty much cool here. </blockquote></div> I dont think it will affect in any adverse way in the short and immediate term, but long term yes. All components have a life span in running life and you are using it if it left running. TV's are supposed to have a life of 10000 hours or so that i had heard long ago. But if you have good power management that shuts down the monitor, winds down the hard disk and so on, it should not make a perceptible difference. On the other hand if its not doing anything why not suspend or hibernate instead.