Power wont turn on

Charge battery fully (with laptop off) then unplug AC power. Do not continuously have power plugged in. This will ruin your battery. Remove battery when not in use for long periods. To refresh battery charge fully then run laptop till it turns off. Turn on again and wait for it to turn off. When laptop wont turn on, charge battery fully again and repeat process about 3 times. This should extend an old battery's run time.

battery may be dead-it might charge up but wont hold enough power to turn bike over -buy new one

Most laptop batteries have a life expectancy of two years or 400 to 450 charge and discharge cycles. After this time, the battery may lose the ability to charge or to hold a charge for substantial periods of time. When this happens, it's likely the battery needs replacement. However, troubleshooting can narrow the problem and ensure you are not wasting money on a battery replacement.

Check Power Adapter Turn the laptop off. Remove any power cords or power sources. Separate the battery from the bottom of the laptop. Slide or press the locking mechanism to unlock the battery. Slide the battery out of the battery compartment. Plug the power adapter into an electrical outlet. Insert the opposite end of the adapter into the charging outlet on the side of a laptop. Power on the laptop. If the laptop does not turn on, the power adapter is not correctly working. If the power adapter is not working, the battery can not charge. Replace the power adapter. If the laptop powers on, the power adapter is properly working. Clean Battery Contacts Turn the computer off. Remove any power cords or sources. Take the battery out of the battery compartment. Dip a cotton swab in isopropyl alcohol. Rub the dampened swab on the battery compartment and battery contacts. Dust and buildup can prevent battery contacts from properly charging. Slide the battery back into the battery compartment. b> Charge and Test Battery Plug the power adapter into the laptop. Charge the battery for six hours. Remove the power adapter. Turn the laptop on. If the laptop turns on and stays on for at least 30 minutes, the battery is holding a charge. If the laptop doesn't turn on or the battery doesn't power the laptop for at least 30 minutes, the battery should be replaced.
Battery Won't Charge Or Short Power Life In Notebook
http://www.daileyint.com/hmdpc/battery.htm Laptop Battery Depot http://www.laptopbatterydepot.com/problems.asp - clean

Are you sure the battery is correctly charged?
Most USB connectors on most PC's don't deliver enough power to charge the battery. Try to charge the battery with the power cord till the green LED is on.
If you'r sure the battery is fully charged and the same happens again, remove the battery for a small time and put it in again.

y wont my mercury turn on it wont even showet chargeing how can i fix the problem.

You Power Cord must be bad. If you cannot get on the laptop by using just the power cord, then the power cord is bad and needs to be replaced. Also it sounds like you've been operating off your battery since the power cord is bad, but now the battery is dead because the bad power cord was not charging it.

Get a new AC Adapter and Power Cord. Or it could be that the pin where you plug the power cord into the table is damaged or broken.

You either have a bad battery, or a bad power supply that charges the unit (power cord). If you have a friend that also has a PSP, try swapping out the battery to see if that works, and or try another power cord to see if the charging indicator light comes on. I think that possibly your battery is dead and the power cord might be bad. You can find good deals for both the battery and cord on ebay. Good luck!

you have probly blowed your battery (aka) a battery leak check your battery to see in you can squese it if you can then its leaked and you need to buy a new battery from amazon or somewhere else for about 5 pound plus P&P

YOU NEED TO TRICKLE CHARGE THAT BATTERY TILL FULLY CHARGED AT A RATE OF 1 TO 2 AMPERS IF THE BATTERY WONT HOLD THE CHARGE YOU WILL NEED A NEW BATTERY THE NEW BATTERY WILL NEED TRICKLE CHARGING AT THE SAME AMPER RATING FOR AT LEAST 16 HOURS THE REASON WHY YOUR LIGHT WHENT OUT IS NOT ENOUGH POWER TO SUPPORT EVERY THING FROM THE BATTERY

pull the battery and try to power on. if no good test the power adapter with a meter - should give 18-19 volts. if it boots with battery off, power up and put battery back on to charge.

hope this helps