Help. I have an Asus Z87 Plus motherboard. I think it works because I was able to boot from my windows installation disc, and installed windows on the hard disk. Everything went well with the installation, but when I wanted to boot from the hard disk, it just restarts over and over, and just beeps once every time it restarts, or it just boots into the BIOS. I have tried different SATA cables, I have tried connecting to all of the SATA outlets of the motherboard, and the hard disk does appear in the BIOS. I have also reset the BIOS to default. Maybe I need a more powerful PSU? I have two 650W PSUs, and it does the same with both of them. Any help would be appreciated. Thanks.