Nothing but Black Screen

[David]

When attempting to power up the U58, nothing but power button/light, network port lights, and fan show activity. The reset button speeds up the fan while depressed. I've tested both memory sticks and hard drive that came with it (via a second Alliwava U58 computer), they seem to be just fine. Yet, no combination of attempts provide anything other than a black screen. Alternate monitor, HDMI cable, and power cord/brick have been attempted/tested. Ideas on reviving this?
Thanks.
David

 

[Alliwava]

1. Are you using an adapter cable?
2. Check if the resolution is correct, usually set to 60Hz.

 

[David]

Thanks for asking...
1. Are you using an adapter cable?
No (HDMI-HDMI cable to monitor)
2. Check if the resolution is correct, usually set to 60Hz.
Resolution default set at 60Hz. Monitor working great otherwise.