I doubt anyone from the ancient days of minecraftforums are still here, but I'm just dropping in to say hi to my favorite off-topic forum community... so,
didnt you get a driver disk with your board? just insert that and run the lan/network install, or somthing like that.
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What motherboard do you have? On my motherboard I have to install Ethernet drivers after a fresh install.
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Did you static something while building by mistake?
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Is the mobo mounted on the standoffs? a friend of mine actually forgot these once, it was all fine, thank god..
Which fans if any are spinning?
Try doing that. Take apart the whole system and separate each part. Here's what you should do:
Put the Motherboard on the box it came in. Connect the CPU and secure the heatsink on it. Put 1 stick of RAM into the 1st RAM slot. Place the PSU to the side of the box and make the connections to the Motherboard and the CPU power. Plug the monitor into the HDMI port on the Motherboard. Take the power switch from the case and start the system. If it displays, then we can go from there. If not, crap.
You just happened to get the bad end of the stick, it really sucks when that happens. When building a $3000 rig for a friend, and you turn it on in front of him and it doesn't work, NOW THAT is scary.
I believe the rate is about 1-2% of electronics having to do with computers are bad and have to be sent back. It's crazy.
Sound's like it's either a bad CPU, Motherboard, or PSU. Here's what you should do:
Ask around and see if you can't borrow a PSU and try running your system on it. If it still doesn't display, the PSU is okay.
If it still won't display, try and run your CPU on a friend's Motherboard. If it displays on the friend's Motherboard, then yours is dead.
Also try running a friend's CPU on your Motherboard. If it displays, then the CPU is to blame.
Whichever part is bad, RMA it and they should replace it.
Those should all work together flawlessly... Rosewill isn't a good brand, but it should be putting out enough power for that system..
Could you remove the CPU and check to see if there are any bent pins?
Leave the drives unplugged, we just need it to display something.
Before we go on, make sure the CPU power is plugged in. I've done that myself.
So now the issue has been narrowed down to either the CPU being bad, the Motherboard being bad, a couple of the pins in the socket being bent, or the PSU is bad.
See if you can't get a hold of another PSU to test the system on.
Sounds like it isn't the GPU. If the GPU is out and the HDMI cable is plugged into the motherboard, and no signal is being received, then the GPU isn't the problem.
OP, disconnect all of the disk drives and HDD/SSD's from the motherboard, and take out all but one stick of RAM from the motherboard. Try booting again. If it doesn't get any signal, try another stick. Keep doing this until you've tried all of the RAM, or until you get a signal.
Let us know what happens after that.
could be a faulty GPU. do the fans spin up when its in?
ok, lets start from the beginning, do you have a 2nd desktop you can use to test parts? if you do toss the card in there and see what happens. if not then the card may be faulty.
also, have you plugged the monitor into something else like a laptop or a second desktop? you claim you know your hardware is good, but if you can test a GPU, you can definitely test a monitor.