I installed a new battery. Wont Power on.

Hi,

Try a power refresh and check if this resolves the problem.

It may be that the CMOS/RTC battery is depleted as well as the original battery and the BIOS may have become corrupted, preventing a normal start. This may have happened especially since you removed the old battery and replaced it. At one stage there would have possibly been no power at all in the laptop.

Here’s the procedure:

a. Disconnect the charger from the laptop.

b. Open the laptop and disconnect the main battery from the systemboard.

c. Disconnect the CMOS/RTC battery from the systemboard. (see image taken from the ifixit Lenovo IdeaPad U430 Touch Motherboard Replacement guide where the battery is shown). If you have a DMM (digital multimeter) check the battery voltage. If it is <2.6V DC replace it. The CMOS/RTC battery is a non rechargeable Lithium battery that has a life span of 3-4 years. Replacement batteries are available online. Just search for Lenovo U430 CMOS/RTC battery to get results for suppliers that suit you.

(click on image to enlarge for better viewing)

d. Press and hold the laptop’s Power button for 30 seconds and then release. This will restore the BIOS back to its’ default condition.

e. Reconnect the CMOS/RTC battery.

f. Reconnect the main battery

g. Reassemble the laptop, connect the charger and try to turn on the laptop and check what happens. If it starts there may be a message stating that the time and date are incorrect. This is normal as the BIOS has been reset. Once the date and time have been corrected the message won’t show the next time the laptop is started. If the battery is charging allow it to fully charge before disconnecting the charger.