After the initial reboot from OTL, there was a single pop-up. But after the second reboot from Adwcleaner, everything seems to be quiet. Will notify if there are any occurrence after this post. Thanks
Edit: Its still there unfortunately :/. Another pop-up came out. But the rate of the pop-ups did decrease. Before this I would get around 2-4 pop-ups in 10 minutes.
As ordered, the logs are as attached.