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Problematic turn on

C

CoW]8(0)

[H]ard|Gawd
Joined
Jul 25, 2005
Messages
1,427
After shutting down my system (which had been on for ~2 weeks 24/7), the system failed to power up again after I installed a new stick of RAM. I uninstalled the new RAM and found that the system still didn't startup. Clearing the Bios didn't seem to help either.

But after disconnecting all the unecessary peripherals from the back (leaving VGA and keyboard), the system was able to power up once again (both with and without the new stick of RAM). And then after plugging in all the other peripherals, the system was still able to power up without any issues.

Any idea what caused the problematic power ups?

Could there have been something improperly grounded in one of the peripherals which prevented the PSU from powering up as a safety measure?
 
Were you at least getting some sort of "twitch" out of the power supply? Does your motherboard have an LED on it? If so, was the LED on when it was getting +5V from the power supply whether it was on or not?
 
Yes, the LED on the motherboard was still able to turn on even when the system wasn't actually powered up.
 
Sounds like more of a motherboard problem to me.
 
That might be true...

But could something like this happen if the USB headers aren't correctly plugged in?
 
Anytime I've seen USB headers plugged in incorrectly, the PC still boots up... and the header wires burn up.
 
Well the header was just upside down in my case...Apparently, the header label is suppose to face downwards (or to the outside of the motherboard). I wonder if that's true for all boards.

I'm still concerned that something isn't grounded correctly which may have been causing the problem. Aside from the screw holes of the motherboard touching the metal hex nuts of the case, what else needs proper contact?

I noticed something strange which happened when my male headphone jack touched the back of my case, a small spark appeared. I'm not familiar with circuits or electronics, but could this be a sign of a larger problem?
 
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