After moving to a new case, my PC won't boot up

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thetortuga747

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Aug 31, 2014
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I've been slowly upgrading an OEM PC for the past year. Yesterday, I moved all of the components from the OEM case to a Coolermaster N200. After finishing cable management and closing the case, when I pressed the power button, it refused to power on

Edit 1: I don't think this is an issue with the PSU because it worked completely fine in the old case before the transfer. I have made sure that it is switched on every time I attempt to power it up.

Edit 2: I have double checked every connection to the motherboard; everything seems to be in order.
 
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Achint2000

Achint2000

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Feb 10, 2013
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Open the case and make it 101% sure all connections are done properly and nothing's disconnected.
Also make sure that the cables must be connected to the port they're meant for.

Case has nothing to do with this until the PSU changes.
 
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thetortuga747

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Everything is connected correctly.
 
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avenseth12

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Did you install the motherboard on the standoffs correctly? If not your board may be grounding out. Also, never do cable management until you are sure the PC boots properly. You will need to undue all of that and rebuild the PC from scratch to ensure it boots again.
 
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Achint2000

Achint2000

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As with my experience, the motherboard is faulty. One day I was using my without-case PC and it shutted down while working perfectly.
I had to send it to warranty repair as something automatically shorted on the mobo ports.

Try taking it to the warranty. If u have connected everything properly, something hardware is faulty.
 
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tiny voices

tiny voices

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Sep 6, 2012
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I do not believe the motherboard is bad.

When OP gets back to us about the motherboard standoffs and after going through the guide, we will see what to do form there. I do not want to rule the motherboard bad yet.

I have used tons of PC without a case for extended periods and then put them in cases without any issues.
 
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thetortuga747

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I have removed the motherboard and inspected the standoffs. Every one is aligned correctly with its hole. I did notice, however, the some of the holes had rubber washers attached on both side of the board, and some did not. The board was like this previous removal from the OEM case, so I don't think this is affecting anything.

My next step is to thoroughly go through the troubleshooting checklist. I'll keep you guys updated as to whether that makes a difference.
 
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avenseth12

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Agree, I don't think the board is bad. Just see what happens when OP rebuilds.
 
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Achint2000

Achint2000

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Chances are that after moving to a new case, either you or the one who assembled your PC back in has misplaced the pins on the front panel (like power button, HDD LED, Power LED, Power Switch, Reset Switch).

I dont use a case and if those pins are misplaced they can cause sparking. I use a screwdriver to turn my comp on and once I accidentally touched 3 pins and got a huge spark. It an also cause your motherboard to get faulty.

Try reading the mobo manual, it must have the correct alignment of pins. Also try to see if there's some printed keywords on the headers. This must be the problem.
 
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avenseth12

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that is complete nonsense. Those pins do not spark.

 
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thetortuga747

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After doing some troubleshooting, I have successfully booted up my computer! I believe the problem was either a shorting out of the motherboard due to improper installation of the standoffs, or incorrect placement of the RAM. Either way, the checklist was a godsend in eliminating sources of error.

Thank you all for your help. Though I'm choosing tiny voices's suggestion as the solution, I learned a lot of valuable information from all of you.

Thanks for being awesome.
 
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