I plugged it in but it does not turn on. The power button doesn't turn it on.

Try to check if battery is removable. Remove all power source (battery and charger). Press power button for 10-20 seconds. Plug in with charger. Power on.

check to see if all the connectors are plugged in properly

Are the batteries fully charged ?

First you want to keep it plugged in and start it. If it doesn't start, let it charge and try again. If it still doesn't start you might want to call and check if you have warranty over it, and then send it back to get it replaced. That or get a new one all together.

You've to replace the ac adapter, if it's brick doesn't get warm or LED does not glow on Power Jack on the laptop. offcourse, check with the wall different sockets

power jack can also be loose. so jiggle the cable to find out.

if notebook is getting power, you can remove the battery, ac adapter, hold and keeep pressing poer button for a minute, then, turn it on.

finally, you can take out hdd and ram, put them back again and turn on the laptop. hope it will help

Unplug the power cable; remove the battery then hold down the power button for 30 seconds. Reinstall the battery; plug the power back in and hold down the power button for 30 to 60 seconds and see if it starts.

Follow the instructions step by step

1. Turn off printer, cable power still plug in,
2. Press Stop/Reset button don't release
3. Press Power Button don't release and than release Stop/Reset button
4. Press Stop/Reset button 2X , wait until service mode to " 0 "
5. Turn off printer, cable power still plug in
6. Press Stop/Reset button don't release
7. Press Power Button don't release and than release Stop/Reset button
8. Press Stop/Reset button 4X , wait until service mode to " 1 "
9. Turn off printer, and loose cable power, wait one minute.
10. Connect cable power, turn on printer again, now this printer ready to use.

May be you should press the channel button on the set itself or there is a problem with the eeprom of the set circuit.

Sounds like there is a problem with the power supply. Try unplugging the T.V. and hold the power button for 30 seconds. Plug the T.V. back in and see if that helps. If it doesn't try switching to another outlet, and if that doesn't work then you may need to replace the power supply which would probably cost anywhere from 140 to 200 for one.

Unplug the set and hold the power button for 30 seconds. Plug it back in and see if that fixes it. If it doesn't then it sounds like there is a problem on the board underneath the power button. Something isn't allowing the circuit to be cut.