Mac Mini hangs at hardware boot and at wake-up

Question

I've got a brand new Mac Mini Intel Core 2 duo 2GHz with 2GB RAM.
50% of the time, when I power it on, there is no "start" sound and
the screen remains dark. The "power on" LED is however switched on.
After a force shutdown, I can start it fully OK. The same behaviour
is observed in 50% of the wake up from sleep: LED on no longer blinking
and dark screen. Force shutdown and power on again solves the case.
I've already reset the PRAM twice without any visible effect.
I've tried the SMC reset procedure also without any visible effect.
The Apple Hardware Test detects no hardware failure and the disk
verification ends up with no problem detection.
The Mac Mini is connected with a 2-year old Eizo L557 flat screen
with a resolution 1280x1024. It worked fine with an older G4 Mac Mini.
I have an Apple pro keyboard in version 4.10 and a 3-button+scroll wheel
Logitech wired optical mouse.
Once started, the Mac simply works fine.
Does anyone have a clue what the problem could be ?
Many thanks in advance
Message was edited by: Jay-Wai
Message was edited by: Jay-Wai
Message was edited by: Jay-Wai

Answer 1

I have the same problem I am hung up right now color wheel spinning around, color wheel cursor, and I have a dark screen I guess I have to hold in the button or something to restart? What do you think? My macMINI is only 2 wks old has 1 gig ram its the 2.0 gHz intel C2D I'm going in tomorrow get upgr extra gig makes 2 gig. I'm not really insightful with this machine how do I turn it off or reboot to get out of this hang'n effect? Do I need to optimize the HD how do I do that I'm from win platform is there a scan/error fix disk / defrag procedure or disk clean we do on the mac what is the procedure on this. It seems your suggesting maybe mem error causing this hang'n on the mac, is that right? Even though I've had the cmptr only two wks I've only used it 4 to 5 days since I was over seas for 12 days.