Resetting Screen Resolution... (screen is black)?

Question

i tried changing my screen resolution and now its says, 'Auto Detect (Analog Input) : Cannot Display This Video Mode'..

So now my screen is black and I don't know what to do? Someone was telling me to press F8 when starting up so I could change my resolution form there but I need step by step..

Please someone help.. I have a Dell Vostro 200..

MY EMAIL IS: [e-mail]

Update:

MY SCREEN IS PITCHED BLACK, CANT SEE MY DESKTOP.. BUT THANKS ANYWAYS =D IMA END UP RESTARTING (REBOOTING) THE WHOLE COMPUTER.. THANKS EVERYONE!

Answer 1

go to control panel look around on the screen where it says appearance and personalization and it will say adjust screen resolution so click on that and then a small window will come up with a square with a 1 and one with a 2 look around that window and click set to default it might take a few seconds but it will adjust to the default screen resolution

Answer 2

F8, then select "Last Known Good Configuration". Hope this helps...

Answer 3

try taking the battery out of the phone that always helps

Answer 4

ctrl alt delete then f11 will work