I have a GATEWAY NV57h50u laptop with Windows 7. The other day I went to wake it up by opening the lid and pushing the POWER button like I always do. I noticed that the power bottun was light up but there was no reply when I moved the mouse so I hit the power button and ever since then when I try to charge it the power light and two lights, one is the battery and the other looks like a lightbulb, have been FLASHING. I have shut the COMPUTER off and RESTARTED it. I have also change the tip. Could I have messed something up when I logged into the laptop after I noticed the light for the power being on?Hi,

If you have not tried earlier, please try these methods:

1) While the laptop is powered off, take off the battery from the laptop, plug in the charger and try to turn on the laptop without the battery. If does not work try next.
2) Try a different charger and / or check DC voltages of the charger using a volt meter.
3) Try to re-seat RAM modules. Also try one by one if you have two modules.
4) Try a power reset. Instructions on how to do can be found on this link: http://tinyurl.com/kajwno4

Please post back results.