[QUOTE=Hashemi;2508558]I updated my laptop bios(1.20) to 1.24,then after that my battery not charging more than 89%, althouth its been plugged in more than 18 hours,My question is how can I back to my old BIOS?[/QUOTE]
As others have mentioned you provided very in little in the way of useful information for us to help you. No make or model doesn’t help to fix the problem. As well as if you haven’t checked they laptop manufacture sites would be the first place you should go to make sure the Bios you get is the verified version. As anything you have to take the time to know your computer hardware inside and out so when it comes time to fix or update you know what to do. This is what I find hard to figure out - people are so adept at using the computer but very thumbs when it comes to learning how to fix or update their computer.