system fault troubleshooting

[john_luthur]

what can I do if a Lenovo laptop ThinkPad series with windows 7 was working before and suddenly hanged and forced it to shut down but refused to come up again after I tried to restart it again. It only indicate power light but never come up since then?

 

[hang-the-9]

Unplug system from wall power, remove the battery, hold in the power for about 30 seconds. Plug in wall power only, see if it turns on.