Recently I've been getting these odd Internet Explorer pop-ups when I start/restart my computer. There are usually three windows with random ads in them, like the ones stating I should update my Flash urgently or ones with odd videos. I don't know why this is happening and all I've been doing them is just closing them as soon as they pop up.
I'm currently running Windows 8.1.
I've run a threat scan with Malwarebytes Anti-Malware but it didn't change anything. I restarted after I run the scan but the pop-ups still appear. I also ran a system scan with BitDefender Total Security 2016 but they still showed up. Any help would be truly appreciated! Thank you.