COMPUTER DOES NOT START

Push the on/off switch. Sometimes they get dirty or just plain old.
Check to see if it is plugged in at the mains, the surge protector and the back of the computer.
Plug something else in the wall outlet to see if there is power there. any electrical appliances such as fan, iron etc)
Check the plugs to see if they are making good contact with the sockets.
Listen to the computer. It might be on and the trouble is with the monitor.
If the computer is on but the screen is blank, check to see if the monitor is turned on - all plugs are securely plugged in. If all is on, check the settings on the monitor such as contrast, brightness.

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