Hi , I recently bought new pieces for a PC I'd Intended to make myself . I changed many pieces in my old pc so it wasn't my first time.... , now yesterday I finally build this PC from all the best components I had and well .... The first time I started it up , some steam came out and a fire smell ... I checked in and there was nothing so I thought it was burning dust. Checked back today and I saw that one of my sata power cord was burn (one at the end of the cord ). All this to say : I can't get to install windows on my pc because it keeps on freezing (randomly , I was once able to finish the installation but it froze on a black screen ). Could this be related ? Also , the sata connector wich was damaged was the one connected to my new hard drive . My computer has a 700 W power supply , gtx 660 graphic card , intel i5 3,4 ghz , a 1000 go hard drive and my motherboard is Asrock IIB75C-10 . One thing I find weird is that I used this power supply and graphic card on my old pc, then of course it didn't "burn" . Oh also , my ram is one stick of 8 go memory (Asata) , and the next time I opened my pc it worked fine ( except for the freeze ) and there was no smell or steam . Anyway thanks for reading me guys !!