If you think that this file contains a virus or another malware, please download a virus scanner.
If ePowerButton NB. exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Try to install an antivirus to see if it helps.
If you want to remove ePowerButton NB. exe from your computer, just go to Start > Control Panel > Add/Remove programs and select Power Management from the list.
If you have any problems with ePowerButton NB. exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Acer Incorporated, the developer of ePowerButton NB. exe and ask for more information.