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If it's left on for a period of time, specified by the power settings, it will dim the display, Hibernate, Sleep, etc. In the Control Panel, Power settings, Advanced Power setting , Change to High Preformance, adjust Hibernate and Sleep to Never, adjust advanced power setting to your specs. Shut down and unplug laptop , remove battery, when not in use, if you use on AC most of the time remove battery.
Ifthe laptop battery is more than 3 - 4 years old then the battery could be wornout. Rechargeable batteries have a finite number of charge and discharge cyclesand will lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up atall.
ORThe battery shows a 100% charge but when the adapter is disconnected thebattery drops off to zero capacity in a very short time.
Ifthe battery drops to an unacceptable charge level then the battery needs to bereplaced.
If it takes days before fully charge? Have you tried replace your battery or just borrow from a friend battery with the same value? Standard charging for battery is only 12 hours. But more that 24 hours charging is not quite good to your battery.
Please click this link to read more information about battery tips and safety.
1. Check your power cord & adapter. 2. If its working then check the battery, reseat the battery & check. 3. If available then check with another battery 4. If no, then remove the battery & switch on the PC in AC mode. 5. Check if battery charging indication or AC power on indication is glowing. if not then need to change ur motherboard. 6. If indication is OK, but could not power ON then check ur RAM for any loose connection or dust. clean & reinstall. 7. If still no display, connect an external monitor, check if display is comming. 8. If Display is coming then your LCD need to replace.
Chances are pretty good that your battery just needs to be replaced. Over time all rechargeable batteries loose their ability to hold a charge. It's also possible, but less likely, that there could be an issue with your AC power adapter or the charging circuitry inside the laptop.
Best bet would be to find a similar laptop with a battery that does charge and switch. If the problem follows the battery then you need a new one.
Simply plug the ac adapter into the wall, the laptop will charge the battery itself.
Keep in mind this... in general, a laptop runs at full speed when it is plugged into the wall. When most laptops are running on battery, things are running more at 50% capacity to save on power, this giving you more battery life. A dimmer lcd and slowing the processor down when not needed are common traits.
You can use the FN key (function key) and the corresponding dim control on the keyboard to adjust the brightnedd of the backlight. It should be marked on your keyboard in a different color, like blue or maybe green (not familiar with that models keyboard).