Dual boot pre-installed windows 10 with windows 7

[gamingprot]

I'm looking to dual boot pre-installed windows 10 with windows 7 but, DELL doesn't have windows 7 drivers for my pc, i'm not sure if this would be a problem. I already have a windows 7 key and the ISO ready to dual boot. i just want to make sure i wont break anything

 

[WyomingKnott]

You won't break anything, but if I had to bet either way I'd bet that the lack of Win7 drivers will give you an unacceptable experience or unusable Win7. Recent hardware simply isn't supported by Win7.