My boyfriend hit my radio display screen last week, and it looks like it's cracked on the inside ! The radio is working , but the lights are not. I was wondering how to fix this?

I wish I had an answer except if he hit it in anger get a new boyfriend

Have him buy you new radio...then get new boyfriend!

I just want to know how to fix it ?

Sometimes these electronic devices are cheaper to change out than buy parts to fix them. Find what a replacement radio will cost. See if e-bay or anyone has a replacement. I'm not sure if the face plate can be removed and replaced or if it is a throw away item. More and more the cost of removal and repair is more that a new replacement. Believe me when I say I find that appalling, but that's the world we live in now. If GM buys one million radios to put in it's cars, how much do they really pay for such a bulk order? Getting a used one, it may work, or it may not depending if it is programed to your computer or not, and if it can even be mated to it. dump the guy, unless he gets you a new radio wrapped in a new Corvette. Then keep him until you find some that respects you.