u/Brave-Program-5676

Hey, I need some help! My laptop's been acting weird lately. Whenever I turn it on, my startup apps don't pop up. Then, after about 5 minutes, if I click on any app, like Lenovo Vantage or WhatsApp or etc, it opens them, but it also opens Word or PDF files or etc. I have no idea how this happened, can anyone help me out? Thanks!