回答“Wifi does not always connect to computer and iPad”Try updating your driver software on your laptop. Its free and you can get it from Sony. Also try downloading Malewarebytes on your computer you might have picked virus.
回答“works for a while then cuts all power to the the cpu,”It sounds like you are having over heating issues. Try turning your computer off and removing the cover to the tower and taking a can of air dust cleaner and blowing it out. A thick coat of dust will make your computer over heat and turn off, because there is no flow of air over the components. Its a cheap fix that has worked for me.
回答“The Acer Extensa 4120 laptop won't turn On”Try to remove the battery and unplug the power cord. Let it set for a few minutes. Then leave the battery out and plug the ac power back it and turn it on. The battery might be so dead it won't turn on. If it turns on then put the battery back in it. You may need a new battery.