Q: iPhone 5c has a black screen, beeps when plugged in

I was using my iPhone 5c, locked it, put it in my pocket, and a minute later the phone was black. Siri would respond, but that's it. I did a search and tried clicking the home screen button and power button at the same time, but nothing happened. I plugged the phone in and tried the same thing- no response. Tried the same thing with a different charge- no response. Plugged the phone into my computer and opening iTunes with 2 different lightening cables- my laptop came up with the blue screen of death? Got my laptop back on and tried to restore the phone, but it won't restore because the phone isn't off. But I can't get it to turn off! HELP