A little bit more info. Are you getting a post screen ,ie details on your screen when power applied. Or is it getting to os and not loading from that point.
What os also ....
this almost sounds like what I got after the first reformat (that wasn't done right!)...had a black screen with 2 XP selections...if I picked the first, Windows loaded...if I picked the second, all I got was an error message saying video could not be displayed.
'Course the shop owner fixed it correctly!
Twitch...welcome to the forums!
Please answer the questions that Datagg and Technical asked with as much detail as you can...they are experts and willing to help but need more information...and I know that from my own experience

Just a thought...are you on a dial up connection, dsl, or cable?
good luck!
cojo