Cannot download, cannot print

Hello I am 99% Mozzila user. But today, and it started from early in the morning, I cannot download a page or file like from my Yahoo email. Or if I go to a page to pay my bill I cannot download a page that I paid medical bill for instance. Downloads that ususaly take a second to appear in a new tab, or open in adobe are still downloading from like 7hrs ago. I cannot ev en stop downloading. I click on x's but it does not stop it. Also, I cannot print anything from Mozzila. It attempts to switch to print preview, a page appear just for fraction of a second and there is a circle of lines turning around for ever, but it never shows up to print. I was/am able to print something earlier and download, but it laggs now and nothing helps. I shut Mozzila, I restarted my laptop countless times, but it does not work. It does work on Google and I can print a word file or from Google