Worked ok last night. We think the power was unplugged all night, and ran the battery down. Now, when we press the power button, the battery light flashes red four times. That is all that happens. Went to Gateway support - they said take out the battery, disconnect power, hit power button for 15 seconds, then reconnect power & try again. Did so, no change. If battery is not in, but power is connected, get nothing, no red flashing light, nothing. Put battery back in, get four red flashes on the battery light, then nothing.

Try holding power button down for 10-15 seconds

do you have a universal travel charger? and use it to charge your battery for about 4 hours. or buy a new battery.If it is not ok, your phone is in short-circuit. go to service center

Remove the main battery and the power supply charger, allow a few minutes to get rid of any residual charge. Replace the battery, press power, if there is no change, remove the battery. Now plug the power supply back into the laptop, press the power, if it starts up the battery is bad and needs to be replaced.

Power drain would be a better solution in this case. 1.first shut down the comp 2.unplug the charger 3. remove the battery and after press and hold the power button for 60 seconds without any charger and the battery.After the 60 seconds replug the battery and the charger and turn the computer .

Power drain would be a better solution in this case.
1.first shut down the comp
2.unplug the charger
3. remove the battery
   and after press and hold the power button for 60 seconds without any charger and the battery.After the 60 seconds replug the battery and the charger and turn the computer .

i think that youve over charged the battery, if you have and it still wont work i think youll have to get a new one

That is because either you screen is dead(test by connecting a exteral monitor) or you motherboard is dead and I have been seeing many dead motherboards as of late

Hi,
by pressing the power button in, the computer has gone into standby or hibernate mode.
Heres what you Do:- press and hold the power button for between 10 to 20 seconds.
that should bring it out of hibernation.
if that does,nt work. remove the main battery.
when you,ve resolved the problem, run a disk-scan via your windows operating system.

Mike @ Compurepair.

Check your settings - could be if very black night, and you set it to 100 iso film speed, and maybe you are on say 1/1000 of sec at maybe f16, then that's ok. You would maybe need an explosion in an oil refinery to capture much.

However, you perhaps could try this:

1 change the battery for fresh one, and see if it helps - sometimes, the shutter won't really shut if battery power is very low

2. change the mode setting to auto, and see if the flash pops up and takes a pix - then if the pix is good, the camera is still working

3. Reset the camera to the factory defaults, by:

• Firstly press the 'menu' button, then the up button above the 'OK' as many times as needed, until you see the top folders are highlighted.
  
  
• Press the right button near the 'OK' until you see the last folder highlighted. You will know this is highlighted when you see the first menu option that says 'Language'. The 3rd one down from that says 'Clear Settings'.
  
  
• Press the down button under the 'OK' until 'Clear Settings' is highlighted, then press the 'OK' button.
  
  
• Scroll up to your choice and press 'OK' to reset your Canon 400D back to default factory settings.

If that fails, back to Canon! - good luck

Walks' solution worked for me! Thanks lots! I was about to head to the repair store!