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Thanks for the information, though, I think that the racks were either faulty to begin with or that the motherboards could not handle the extra load. It's not the hdd, per se, the motherboards on which I had the racks no longer function. I've puth them both into my storeroom until I decide how to resolve this issue. Both these computers I've been using for more than 2 years previously with no problems. I tried the cmos batterry removal and insertion to "reset" the bios but still no go. I've disconnected all connectors apart from the PSU and still no action happening. The 860 watt PSU (CoolerMaster) had Windows 7 圆4 (8gb ram DDR2 800mhz) and at power on, there is an initial "try to start" but then shuts itself off. The PC with 680 watt PSU (CoolerMaster) had Windows 7 x32 (4gb ram DDR2 800mhz) no longer powers up, the motherboard light does not go on. I inserted the hdd prior to power up just in case it did not support hot-swap feature. I"m thinking that the molex did not provide adequate power for the 1TB hdd as well as the rack itself. One had a 680 watt PSU and the other had 850 watt PSU. My Sata Rack(s) allows for a Sata hdd but the connector for the tray (to PSU) is Molex, First time I used it (them), the motherboard(s) overloaded (assumedly) for two desktops computers. Does the molex connector provide the same or less or more power than the Sata cable connector?
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