My Toshiba Laptop (around 5 years old...) no longer powers on. When I hit the power button it lights up for several seconds and then turns off. There is no other sign of life, such as the fan starting up or anything else. I get the same behaviour whether the AC is plugged in or not.
This just happened one day, there was no particular event that seemed to trigger it. I don't want to pay a shop to have a look because it's not worth spending much money on such an old computer. If however there are some easy things I can do myself to try and fix (or at least diagnose) this I'm all ears.