I’m copying this to the others who have given good advice about my “monster” when I get back on my “main” desktop machine. (The PC I’m on now is my new Win 11 Pro machine, which I’ve been putting off getting fully set up (install 2nd HD, data transfers, apps / programs installed, etc. So, it’s pretty bare at this point, but, DOES have a spare SATA and power connection for testing (ta-da!) the HD out of my brother’s machine.)
The result:
The HD out of my brother’s machine appears to be fine, and it has Windows 7 SP1 as the OS on it. The last file modified was about 2 weeks B4 my brother passed away - right about the time he had to leave home for better care.
I’ve rechecked literally everything everyone has suggested including the PS voltages, swapped RAM, disconnected everything but the MB, speaker*, keyboard, and CPU (didn’t pull the CPU.) Num lock, scroll lock, and caps lock all still flash green almost immediately on power up, but, no beep, no video. That last includes trying the DVI outputs on both the MB and the monster graphics card, and, again, VGA and HDMI off the MB. (I’m still unable to find a speaker, but have not completely disassembled the front of the machine.) Having having become familiar with most of the rest of the layout of the machine back when and shortly after I originally created this thread, none of these rechecks and added checks took long. Maybe an hour at most. :-)
But, what the deuce is going on? The machine appears to have been in use perhaps literally the day my brother left home.
The only suspicion I have left is that combination keyboard / mouse connection on the back. Is it possible the machine “thinks” there is no keyboard if just a standard keyboard is plugged in there? Could I possibly do something by connecting a keyboard to the MB in some other way? Would the MB manual state that somewhere? It sounds “crazy” that this could be the problem, but...
That was supposed to be: I’ll check back later when I get back on my “main” desktop machine. :-)
Thank you for including me in your update to this problem.
You mention not receiving video but eveything is “green.”
I’m not sure of the age of your equipment but I’m sure you had to disassemble and reassemble everything, yes?
By chance, do any of the connectors, ports, adapters require pins? Like old VGA cables have adapters with pins. If a pin is missing, you might not get video or some other piece of hardware or peripheral may fail.
With the power off and the system unplugged, I suggest carefully reviewing all your connections to make sure all your pins (if any) are accounted for. If any are missing, examine the port it goes into to see if any have snapped off inside. (Carefully remove them if you can or check youtube to see if there are any DIY tricks for removing a snapped pin from a port.)
If a connection doesn’t use pins, make sure the connector itself still has enough metal to make contact inside the receiver. Possibly, a cable is so kinked that wiring inside is bad or broken.
Replace cabling that have missing pins or worn out connectors. …Or just replace all the old cables with new (or at least different) ones.
I hope that helps. i hope its something mundane like that! Best of luck to you and I hope you can bring your system back!