Is the light on your adapter on? If so and it still won't turn on, you might need a new battery. You can check a troubleshooting page on www.ifixit.com/wiki/sony_vaio_pcg-4g1l_Troubleshooting
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Is the light on your adapter on? If so and it still won't turn on, you might need a new battery. You can check a troubleshooting page [http://www.ifixit.com/wiki/sony_vaio_pcg-4g1l_Troubleshooting|here]
Is the light on your adapter on? If so, you might need a new battery. You can check a troubleshooting page on www.ifixit.com/wiki/sony_vaio_pcg-4g1l_Troubleshooting
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Is the light on your adapter on? If so and it still won't turn on, you might need a new battery. You can check a troubleshooting page on www.ifixit.com/wiki/sony_vaio_pcg-4g1l_Troubleshooting
Is the light on your adapter on? If so, you might need a new battery. You can check a troubleshooting page on www.ifixit.com/wiki/sony_vaio_pcg-4g1l_Troubleshooting