E6850
4Gb OCZ PC2-6400
Gigabyte GAP35-DQ6
Asus 8800GTX
4x SATA hard drive
2x SATA DVD RW
First time I switched it on I got a continuous ear-piercing beep that didn't stop. Checked inside and plugged in the 4-pin power socket marked PCI-E. After that it started so I assumed that was the problem, went into the BIOS and made a few changes to the SATA/IDE and integrated peripherals, didn't touch the overclocking options. Rebooted, and it didn't come back. Got four short beeps, all the fans and drives spun up but nothing on my monitor, then it started rebooting by itself. It would power up for a short while then reboot, just kept going like that until I pulled the power cable. I tried unplugging everything and only connected a single drive and the necessary power cables, but I'm now back to the continuous beeping. What the heck is going on?