bmmlref.exe, and it's process, IBM Thinkpad Battery Manager, are not malware or adware and are safe to have on your computer.

Viruses and adware can infect your computer very easily, even if you only surf the internet. The fact that this file is not malware doesn't mean your computer is not infected.

The best way to avoid problems with viruses and other types of viruses is to scan your computer for free and get rid of all the virus files right now.