tizmeinnit

that is a Packard bell warning not a flash warning by the looks of it. There will be some Packard bell stuff running from start up.

Hold win key and tap r a run box will open type msconfig. Click the start up tab and untick everything that says Packard bell. I personally would most likely untick a hell of a lot more but they will do for now lol exit and click reboot later

In control panel add remove programs . Here I would uninstall everything Packard bell you do not use. Reboot