Hi,
My usual tip for those that can't power up their UTVs is to check the Power Supply to Motherboard ribbon cable inside the UTV...
Pull it out check the contacts and reseat it... It is a rather delicate looking cable and some on this forum have noticed bad contacts on this cable have caused issues.
If you suspect your Molex connector (Hard Drive/IDE Power Connector) is bad you can test it by removing the hard drive housing and either removing the connector from the UTV and testing it in your PC OR by replacing it with a new extension cable available at various stores. Be sure to check your Hard Drive isn't getting power (if you can connect a spare PC Power Supply or run an extension to the UTV you can run the UTV hard drive from that instead of the UTV itself)... No lights or response from your UTV usually means there is a problem besides the hard drive... Check the power supply/motherboard ribbon cable and the front panel cables are connected properly...
UPS systems are good insurance for having happy UTV users. Got all my UTVs, Multi-Switch, Digital Answering Machine (bad power erases all in/out records!), and Computer on 4 UPS units.
Later,