My laptop kept shutting off so I opened it up and seen that the wires are broken, I think from overheating? The red one connecting the fan is completely split in half, all the rest just look like the outside covering has melted. I put the laptop back together & now it smells like burnt plastic. I can buy a replacement fan but just don’t know how to replace it & don’t wanna ruin it more than it is. Please help. Thanks.