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New Rig - Computer starting automatically when plugged in

post #1 of 5
Thread Starter 
hello,

I am in the process of building some new budget computers (4 of them) and I am testing with the first one of them. When I first plugged it in it was not starting on its own when PSU switch is flipped on, but now it does. Basically the computer is starting when plugged in or when switch is flipped.

I didn't do anything out of the ordinary other than move a jumper and remove the motherboard battery.

Any reason this would happen? I read a post on this forum saying the cause is most likely a bad PSU but I dont think that is what's causing this. Anything I can check for?
post #2 of 5
Thread Starter 
Ok so I just removed everything from the case and left motherboard plugged in to 24 pin and the 4 pin and it is doing the same thing - starting up when plugged in. I even removed the case switch jumpers

Here is a picture



What does this indicate? Bad mobo or psu?
Edited by Peachhunter12 - 8/6/13 at 1:14pm
post #3 of 5
bios setting. was it set to turn machine back on after power failure?
post #4 of 5
In addition to a BIOS setting, another thing that can do that is a very low CMOS battery.
post #5 of 5
I had the same issue, changed the motherboard and everything is fine now.
In my case, it was the motherboard.
HTPC
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9550S GA-EP45-DS4  MSI HD 7790 GEIL Black Dragon 4GB Kit (2x2GB), PC2-6400, CL... 
Hard DriveOptical DriveOSMonitor
Seagate 320/500 GB NEC ND-3520A  Windows 8 Pro Toshiba 32SL863B  
KeyboardPowerCase
TeckNet X300 AX760 CM Centurion CAC-T01-EK 
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HTPC
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9550S GA-EP45-DS4  MSI HD 7790 GEIL Black Dragon 4GB Kit (2x2GB), PC2-6400, CL... 
Hard DriveOptical DriveOSMonitor
Seagate 320/500 GB NEC ND-3520A  Windows 8 Pro Toshiba 32SL863B  
KeyboardPowerCase
TeckNet X300 AX760 CM Centurion CAC-T01-EK 
  hide details  
Reply
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