Laptop won't start

Hello,

I am working on a Dell inspiron 1525 and I can't get the thing to start. I just replaced the charger and the first time I turned it on, it worked great! I then went to turn it on a second time and it will boot and the lights flash and I get to a screen that asks if I want to start in safe mode or not. After I make that selection, the next screen is black with only my mouse showing. I have taken the battery out and held the power button and then started the laptop with no just the charger in with the same results. Any suggestions as to what I can do? Thanks a lot!