Two things are happening and I have no idea why.

Note that I'm using a laptop issued to my mom by the school district. Every time an Internet browser is closed, all history, cookies, etc. are cleared. I have been using Firefox exclusively on this and have had no problems until recently.

1) The Internet browser keeps closing on its own. It's happened twice today, and once when I had stepped away from the laptop. The computer doesn't freeze or give any indication it's about to happen. What the eff.

2) Every time I do a Google search, some of the links (even ones I know should be legit and have used before with no problem) will redirect me to some random shit like Break or some store. Sometimes even sketchier-looking stuff. Again, I have no idea what's happening. This happened on another computer I used on another wi-fi signal.

I'm not that knowledgeable with computers. I've given all the info I can think of at the moment. If anyone has any idea what's up, please let me know 'cause I'm officially irked.