Lenovo ThinkPad T400 PC Notebook "ac power adapter 3" Questions

...AC or battery power, but does not recognize the AC adapter. 2. Laptop will run without AC adapter (on battery). 3. Laptop will run without battery (on AC). Still does not recognize the AC adapter as ...

...is good. Try a different outlet. 2. Test the AC adapter if you can with a multimeter. 3. Remove battery and AC adapter then hold the power for 40-50secs. Reconnect AC and try power on. Hope this

reset. To do this: 1. Remove battery and unplug AC adapter. 2. Press and HOLD power ON button for 30secs. at least 3. Put back the battery and plug back the AC adapter 4. Power ON the laptop as normal

...something and as a result the laptop again can be turned on. Try this: Remove the battery and AC power, press and hold the power button for at least 30 seconds and then put both back in and start ...

...power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker. 2. Battery will not charge in the laptop. 3. Laptop runs fine off a charged ...

...power on, that means that the AC adapter is working fine as well as the DC port. If the laptop is not able to turn on, it maybe the AC adapter itself or the DC port. 4. Try to use another AC adapter ...

...power on, that means that the AC adapter is working fine as well as the DC port. If the laptop is not able to turn on, it maybe the AC adapter itself or the DC port. 4. Try to use another AC adapter ...

...AC Power 7. Wait for 5 minutes and try to restart the computer 8. If it still doesn't starts. 9. Hold down the power button for 60 seconds with AC adapter and battery connected 10. Try to restart now ...

...power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker. 2. Battery will not charge in the laptop. 3. Laptop runs fine off a charged ...

...power on, that means that the AC adapter is working fine as well as the DC port. If the laptop is not able to turn on, it maybe the AC adapter itself or the DC port. 4. Try to use another AC adapter ...