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Weird computer power up issue. - Page 2

post #11 of 14
Quote:
Originally Posted by ericld View Post

Thanks for the info preachp. It seems that the problem was power was being looped back to the MB through the usb connection from my external HDD. I am now checking with Nextar about this issue. When I have my portable HDD connected to my sig, I have it connected to its external power source, and I guess a diode went out and allowed for the feedback. I have been running this settup for over 2 years now, and its the first time I have had a problem like this. The Zalman PSU has been a real champ. It just took me a little bit to spread the power out for the 2 4870s since it is a multi rail PSU. So, if you have anything connected to your computer that uses an external power source, and start having issues, then that might be the problem. I wonder how many people use usb hubs that use external power and other things as well.


i would say alot...lol

did that fix your problem?...give us an update smile.gif
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easyfps
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post #12 of 14
Quote:
Originally Posted by ericld View Post

Quote:
no way...theres power getting on there somehow
rolleyes.gif
Yep, there sure was, and in the most unusual way. After completely removing everything from the MB, and letting it sit overnight, the MB lights were still on this morning. I was totally stumped. Then, I happen to look down, and see the Nextar 2.5" external enclosure that I keep plugged in as my portable storage for work, and thought, no way. So I unplugged the usb cable from it and poof, no more MB lights. I guess since I plug it into an external power source while its connected to my sig, somehow that power was feeding back into the MB via the usb connection and somehow tripping the overload protection. At least thats all I hope it was doing. Now, to put everything back together and hope, pray and keep my fingers crossed that nothing is tweaked.

it was probably just confusing some logic that was supposed to be powered down and wasn't fully. overload protection is a different ballgame.
 
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post #13 of 14
Thread Starter 
Yes, that did fix the problem. Now I just have to get a new external enclosure for my 2.5 HDD. Maybe eSATA this time. Also, this Gigabyte board has an overload protection on it. So any feed back voltage, or spikes are cut off, and the board is shut down.
post #14 of 14
Hi ericid,
That wooul explain he common behavio for sure.


good find!

Have a great day.
    
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