needhelp123

My computer just started acting weird. Some pages come up perfectly fine while others say done with errors on page (and the page doesnt come up :ex: gmail.google.com) from what i have tried to figure out I am missing a DLL file (code 0?) but i do not konw how to restore these on my computer. also when i am on one page and click a link to go to another, the link will not open in the new window (the address doesnt automatically re route itself in teh new browser) please help i dont konw what to do