Here is my problems that i have very long size graphics card so my all sata ports covered with that so i buyed right angled sata cable very very cheap means i buyed three sata cable for 0.20 dollers and it seem to be bad quality also then i have my old wd hard disk that got some os problem with this sata cables may be or may be not. Then i formatted it and boot new win 7 os but while booting it get stuck at setup is starting. Then i tried this hdd to others pc and that problem is going on so i get that hdd to shop from where i buyed it and showed that this problem so they said me that this happens bcoz of sata cable and i think about it bcoz i didnt telled to shopper about my new cheap sata cable and he only telled my that something wrong with sata cable. Then i replaced hdd it with new one and while again booting when windows is loading files some massage camed that windows is not able to boot bcoz of unplug cable or hardware fail. So plz help me plz