nothing on computer screen

[glamrockchick]

Was told to start computer in safe mode but i can't if nothing will come on the screen.. the computer modem comes on and makes a noise but thats it..

for the past few weeks my computer won't boot up- i.e. nothing on the screen, yesterday it booted up and today for a few minutes then froze now can't get it on.. i did have a blue screen issue as well.. do you think there is anything i can do or not? I'm running windows vista