i have a dell vostro 400 desktop...when i tuen it on it stays stuck on black and blue dell screen for a good 3 minutes...from that screen it gives me the option to press f2 or f12...it wont let me into neither of them...and also when my computer finally boots up i try to go on the internet and it will not let me..i called my ISP and they said its not a problem on their end bc to them it shows i have a perfect connection..i ran all the tests on my pc and its passing all of them. does anyone have a solution for me please?/ its driving me crazyyyy