computer wont work please help

April 18, 2012 at 16:17:26
Specs: Windows Vista, amd 4100 black edition
I have built a computer for my gf i have built many before with no issues all is new but some fans a pulled from old rig. i was very car full i grounded myself to the case and the case to a Orange mat i got from best buy i get it all together and i wont fire up the led on the MB will come on but thats it its an amd fx 4100 black edition and the MB m5 a78l-m lxplus by asus im at a loss thinking it was the mb i returned it to tiger.comgot a replacement and still the same issue is there please help

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#1
April 18, 2012 at 17:01:26
Do you have a decent power supply? Do you have BIOS version 0501 or better? Did you mount the heatsink/fan correctly? Did you use a thermal pad or thermal paste? If you used paste, did you apply it properly - just a tiny dab in the center of the CPU?

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#2
April 18, 2012 at 17:13:21
it has a 450watt ps i put my 750 on it from my computer and still nothing i havent even loaded up for the first time so bios is out for now i mounted everything correctly and carfully i put a lil on the top of cpu and a lil on bottom of heatsink a thin layer on both and spread evenly

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#3
April 18, 2012 at 20:46:10
Choose your CPU and read the instructions. Spreading like peanut butter is out because you use too much (especially if you applied to both sides) and also create air bubbles across the film which reduces the effectiveness.

Pull it out of the case and bench test it JUST with the minimum attached (CPU, Heat Sink, One Stick of Memory, monitor and keyboard), then add one component at a time. Later remount in case, leaving only heat sink attached for the transfer.

You have to be a little bit crazy to keep you from going insane.


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#4
April 19, 2012 at 01:40:00
If you have never been able to turn the board on, are you sure that your power button is connected to the mainboard correctly?

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#5
April 19, 2012 at 05:26:32
"i put a lil on the top of cpu and a lil on bottom of heatsink a thin layer on both and spread evenly"

That could be the problem. AMD CPUs use the "middle dot" method. No spreading of the paste is required, in fact, doing so can cause problems as was mentioned by Fingers.

http://lib.store.yahoo.net/lib/svco...

"it has a 450watt ps i put my 750 on it"

450W or 750W tells us nothing about the quality of the PSU. A decent brand name 450W is better than a cheap generic 750W, so without knowing the make/model or amperage specs of either unit, there's not much we can comment on.

"i have built many before with no issues"

Experienced builders always benchtest. If you didn't benchtest the hardware before installing it in the case, I suggest you follow Fingers other suggestion - pull everything out & start from scratch.

http://www.techsupportforum.com/for...


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