Homebuilt PC power issues

Hello everyone,

I am a new member to to the forums however I visit the site quiet often. I have recently put together a PC with used parts that I have no reason to believe to be defective. My problem is that once everything is hooked up and nothing turns on, no cpu fan, no nothing. All I see is the light on the front case that's telling me there is power. Here is the list of parts:

500 watt diablotec PSU http://www.amazon.com/Diablotek-Series-500-Watt-Supply-PSDA500/dp/B001P92AA8
DIABLOTEC case http://www.microcenter.com/product/386372/D4_Mid_Tower_ATX_Computer_Case
Patriot Viper 2x2gb ddr2 800 pc2-6400 http://www.newegg.com/Product/Product.aspx?Item=N82E16820220293
Gigabyte GA-EP45-UD3P mobo http://www.newegg.com/Product/Product.aspx?Item=N82E16813128358
http://download1.gigabyte.ru/manual/motherboard_manual_ga-ep45-ud3(r)_e.pdf

Intel E8400 cpu http://ark.intel.com/products/33910/Intel-Core2-Duo-Processor-E8400-6M-Cache-3_00-GHz-1333-MHz-FSB
Zalman CPS7500 heatsink http://www.amazon.com/Zalman-CNPS7500-ALCU-LED-CPU-Cooler/dp/B000P51130
MSI NVIDIA GeForce 8600 gt GDDR3 http://www.newegg.com/Product/Product.aspx?Item=N82E16814127286
320gb hitachi HDD

I did all the basic troubleshooting, took parts out until only mobo, cpu, & PSU were left. Only thing I didn't troubleshoot is the cpu & motherboard however they were bought on ebay from reputable sellers and were advertised as working. My other concern is that the zalman heatsink is 3 pin instead of 4. Could that be a problem? I've built a few machines however I don't consider myself a pro in putting PC's together. Here is a pic of everything wired. Let me know what you guys think. I might overlooked something as it has been a while since my last built.

Here are some pics, they are bad so might not be helpful and excuse the messiness. First time I organized everything I had to take everything apart :P





5 answers Last reply
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  1. Diablotek is a bottom barrel PSU. Awful quality and probably makes only around 300w.

    You know you have wires blocking your CPU fan correct?

    You should tire all those cables out of the way so they don't interfere with fans and stuff.
  2. First if you are lazy, clean your messy wires, its hard to find the problem if you have a bad wiring layout. Check your cpu fan, is it fully inserted, is it even connected? Some mobo won't turn on unless the cpu is connected. Another option is if you aren't lazy, remove everything, start from scratch and try figure out what the problem is then if it still won't turn on come back here.
  3. Ya-try to make it look a little more like

    <img src="http://i.imgur.com/cxdseTY.jpg" alt="" title="Hosted by imgur.com" />

    Do u have a spare psu to test or maybe borrow one?
  4. pete123edgar said:
    First if you are lazy, clean your messy wires, its hard to find the problem if you have a bad wiring layout. Check your cpu fan, is it fully inserted, is it even connected? Some mobo won't turn on unless the cpu is connected. Another option is if you aren't lazy, remove everything, start from scratch and try figure out what the problem is then if it still won't turn on come back here.



    Defiantly not lazy! This is second time that I took everything out and put everything back in. Reason I didn't organize anything at the moment because I am still unsure what the problem is so I am trying to save myself from wasting more time.
  5. J_E_D_70 said:
    Ya-try to make it look a little more like

    <img src="http://i.imgur.com/cxdseTY.jpg" alt="" title="Hosted by imgur.com" />

    Do u have a spare psu to test or maybe borrow one?


    The one mentioned above is a new one that I just bought. I had a used one before and that was the first thing I swapped out. Now I'm assuming both PSU's are functional.
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