Help! No power.

SOURCE: Charger plugged in and computer says it's charging...but it's not

Return it! It's a factory defect they just admitted to it online. Call HP and they'll fill you in on the details.

SOURCE: My Acer Extensa 5420 laptop won't charge. I t

Could be down to a few things. First it is worth checking all the connections and making sure they are good and clean.
Im presuming that if it wont charge, it dies when you disconnect from the mains? If not let the battery die completely and then recharge fully. Discharging, Charging & discharging is also an effective method of calibrating the battery
If the battery gets hot while plugged in, you should remove the battery and allow everything to cool down (some systems have a CMOS setting to prevent over charging, this can take 3-5 days in a cool environment to unlock the battery)
Have a look at the power options in the control panel and make sure everything is reset to default settings.
I once disable hibernate option for a troublesome dell and this allowed the battery to take a charge.
A more aggressive route is to check the bios settings and check if you need to update
It is worth noting that if the laptop is new (or still in warranty) bring it back, it could be a faulty battery, which is not unheard of!

SOURCE: Acer power cord

Hi,
if you can use your notebook without the battery with the power cord attached, then the battery ist defective. If your notebook doesn't power on at all without battery, then the power cord is faulty.