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Hi, Disconnect your ac adaptor from the laptop and remove the battery for about 30mins. Then keep power button pressed for about 10 seconds. Now fit install the battery and the power lead, wait for the mains led to liight which should also show the battery led as being charged, after 20 seconds, power up the laptop.
It should now power up, if not check if any flashing leds are present and if the lcd screen tries to light up.
If you have the OEM Lenovo XP disc are you have to do is insert and
follow the instruction. If you are using off the shelf software, then
switch the BIOS SATA to compatibility mode, and boot from your CD drive
with the disc in it, and format the harddrive followed by installing
the software.( like Windows XP or the Vista)
If you are running on battery power and it powers off, then the battery is not fully charged or the battery is worn out or faulty.
Rechargeable batteries have a finite number of charge and discharge cycles and after 2 or more years they will lose its charge capacity until it will not charge at all.
A new battery will solve your problem provided the charging circuit in the laptop is OK.
Had the same problem with a manufactured refurb, would go to 79 %, if you go to power options, change plan settings, change advance power settings, then to the Lenovo energy management tab, press the big enable Lenovo energy management, click on the blue gear to the left of the question mark, if "Optimize for Battery lifespan" is selected it will only charge the battery to 80%, change this to "Optimize for Battery Runtime" and it will charge to 100%
Batteries in portable systems on average last approximately 300 to 500 recharge cycles (Roughly 12 to 18 months) and are considered a consumable item (Hence the 1 year warranty when the rest of the system can have a 3 to 5 year warranty). So your battery replacement is not entirely unusual. If a replacement battery is detected and recharges normally, then stops working after 12+ months of heavy use, the failure is normally the battery.
One thing to check is to see if the battery is under recall:
Hi.. I have a temporary solution to your problem. I had the same problem. Remove the battery and the ac adapter from the laptop. Just reconnect the ac adapter without the battery and switch on the lap. Presto.. Problem solved.. It doesnt power off anymore unless u remove the ac adaptor. Usefull if u hav needed files n want 2 create a backup. Still i havent found out a permanent solution to this problem. I suspect its a motherboard fault