My seagate hard drive wont switch on when I connect it to the computer

I am assuming you are referring to an external hard drive. This is becoming a more commonplace occurrence now that there are more and more of these devices out there and they are starting to age slightly. The drives inside these enclosures are the very same drives you will find in desktop and/or laptop computers, depending upon the physical size of the drive enclosure. Unfortunately, the majority of these enclosures

1. provide very poor shock protection
2. provide almost no ventilation (cooling)

Add to that the fact that they have an additional circuit board inside to convert from SATA to USB which has an unacceptably high failure rate, and you have a recipe for disaster.

All is not lost, however. If your drive is still under warranty, you can get it repaired or replaced.....with the great possibility of losing any and data that was on it. Most folks don't like this option.

You can crack open the case and remove the hard drive within. You can then insert it in a docking station or install it in a desktop PC and try to recover your files.

More and more folks are getting upset with the shorter life span and even shorter warranty of the SATA drives being manufactured today. There was a time when manufacturers routinely warranted their drives for five years. Today most only have a one year warranty...a few go as high as three. You'll pay a bit more for the three year drive though. Makes me yearn for the old PATA drives......