Problem with AC plug in on the back of the computer
When I plug in the ac power pack into the ac in spot on the back of the computer it does not connect and power up the computer. Sometimes it will switch from battery to power but will not stay connected for more then a few seconds.
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The power-on password prevents use of the computer until the password is entered. The setup password prevents unauthorized changes to Computer Setup. To clear the passwords, you must remove all power from the system board. If you do not know the passwords, use the following procedure to clear the password: 1. Remove all battery packs. 2. Disconnect the AC power. 3. Remove the real-time clock battery. 4. Wait thirty minutes. 5. Reconnect the AC power. DO NOT INSTALL THE BATTERY! 6. Restart the computer. During Power-On Self Test (POST), a ? 162 System Options not set? message appears. 7. Shut down the computer, then disconnect AC power again. 8. Replace the real-time clock battery. 9. Install the battery pack(s). 10. Reconnect the AC power. 11. Start the computer.12.It should work....
Can you tell if your AC power cord is working? (Is there a light on the computer that comes on when it's charging?) If the power pack went dead, your battery could've died and now you get no power to the PC which is why it won't boot up.
To test, take out the battery and plug the AC cord in and try to boot up. If nothing at all happens without the battery, then your power cord or power pack is dead, and you just need to replace it.
Remove the primary battery pack and travel battery pack (if applicable) and plug the computer into an AC outlet using the AC adapter. If the computer starts up, one of the battery packs may need to be replaced.
if the computer does not start with a/c power connected. ensure the power outlet is providing power, otherwise you problem may be the motherboard, cpu or memory. please provide more details (ex. lights on and color, any beep secuences heard, procedure attempted, age of computer, how the problem came to be)
follow this procedure:
1. unplug the ac adapter and keep it unplugged.
2. Remove the battery and keep the battery unplugged.
3. Hold the power button down for 15-20 seconds(Nothing will appear on the display and none of the lights will light up)
4. Release the power button and plug in the ac adapter ONLY. (A power indicator light should be lit on the ac adapter when it is plugged in)
5. Normally power on the notebook.
6. If the unit does not power on, remove the ac adapter and insert the battery into the system.
7. Plug the ac adapter back into the system, the battery charging indicator light will light up. If the battery indicator light does not light up, the ac adapter may not be providing proper power to the unit, and may need to be replaced.
In my searching for another problem, I read a lot of postings about Toshiba laptop computers and faulty power plugs (at the spot where you plug in your AC adapter into the computer). It seems to be some kind of universal problem with Toshiba and I think there was even a recall a while back because of this. I do not know if this is your problem, but it certainly sounds similar.
try taking out tthe battery and then try powering the system only on ac adapter connected
if it doesn't power on only on the ac adapter make sure that the port on the system where you plug in the ac adapter for any kind of bent or broken pins
if the port is ok then get your ac adapter replaced.