|Is this a laptop? Sounds like it might be the power adapter but just to be on the safe side download, install and run this:|
(free version from green button top right).
Before you run it go to "Settings > Detection and Protection" and put a check mark in "Scan for rootkits". If it finds anything at all please copy/paste the log on here.
I appreciate you might have to download and install it using safe mode. If you can't get the download then Save the download file on another computer then transfer it with a flash drive to this one. Double click the download file to install.
Always pop back and let us know the outcome - thanks
message edited by Derek