what are your most common computer problems?

My computer have the problem of getting hot very often.Even in a very cold day .I control this by keeping a temperature meter with automatic sensor.This help me to confident about the problem which can occur.By the way i have not any software.I use to work on ubuntu.In this way i can handle the problem.My monitor have also creating.Now i wish to change this and bring new monitor for my PC.

I do not have any consistant problems with either of my computers. If a problem develops then I shall deal with it accordingly. If you are experiencing consistant problems it is because you have simply accepted the fault and allowed it to continue. If your tap started leaking would you fix it or continue to live with the problem constantly?

my computer hangs all the time...