Does it have a reset button ?
You can test adapter output with any multimetr, if its working then try to boot laptop without battery, if not power on, then you can check power socet and fuse near power socet on motherboard. To reset CMOS on most laptops you need to remove CMOS battery from motherboard for about 15 minutes. Also, if it is not solve your problem you may add more detailed information about laptop model and details about this problems with pictures. Thanx
SOURCE: new battary is not compatible with the laptop
The "A" in the battery nomenclature indicates the fact that the battery without the "A" has been reengineered
and or updated so return, if possible, the outmoded battery indicating to the reluctant vendor, if so, that
refusal to do so can result in product liability, as some batteries can actually explode or cause fire, or at
least product malfunction as you are already experiencing.
Then go on to Sony's website and see if there are warnings for your particular battery, or if there is also
a warning that such batteries are in circulation that are knockoffs, counterfeits, that are egregiously guilty
of all of the above.
Now, in order to get the most out of your experience on the Sony website, please specify the EXACT model
on This Page as I have only the following: VAIO® VGN-FJ290P1 whereas the following are your alternatives:
VGN-FJ290P1B
VGN-FJ290P1G
VGN-FJ290P1L
VGN-FJ290P1R
VGN-FJ290P1V
VGN-FJ290P1W
If your laptop works fine while plugged in but stops working while unplugged it's likely that either your laptop battery is bad or your laptop is not charging the battery properly.
Below are steps that can be taken to help identify the cause of this issue.
Leave power plugged in
Make sure the computer has been charging from the power plug for at least two hours before attempting to unplug it.
Remove and reconnect battery
In some situations the battery can become loose.
Removing it and then put it back into the laptop.
Third-party utility
Use a third-party battery utility to determine the total capacity of the battery. For example, BatteryCare is a free software utility capable of doing this.
Replace battery or AC adapter
If your computer is still in warranty we suggest skipping to the next step.
If the above steps have been completed, we suggest replacing the battery in the computer or AC adapter. In most situations it's a bad battery.
hope this helps
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