I dont have a homepage?

When I open my browser all I get is a blank page with nothing on it, no address bar or anything. I have to go up to the address bar and type in google.com (which used to be my homepage) and after doing that a few times, it finally (sometimes) works. When it doesn't, I have to go down to the bottom and click on the internet icon at the bottom of my screen, before a list of websites I've been to appears and I click on google and it brings me to google by clicking on that. But I don't have an actual homepage, all I have is a blank white page with nothing on it. I've tried resetting my home page to google by going to both my computer and internet settings and re-setting it and for a few hours, it works and my homepage is google and I actually have a homepage, but it doesn't last long. It's been this way for close to 7,8 months and I'm honestly sick of it. How do I get my homepage to stick to google or MSN or anything instead of just a blank white page? Please help! Thankyou!!!