How old/big is your hard drive? May be you need to update it, because this could be a reason why browser update for samsung un46d6900wf pop ups. Make sure everything about hard drive are ok then you can pass this possiblity, well, a little more, regular maintenance and good using habit will do good to increase its lifetime.Third -- Unreasonable startup or shutdown operation.
Did you treat your computer violently? Like force to shutdown to power off? Pull out external device without conduct popup commend?Fourth - Baddly programmed third party applications.
Have you installed any suspicious softwares and whether the errors stared to pop-ups after installation? If so, you will need to uninstall those programs first.