Network and Booting Problems on newly buildt rig! Help!

So, I buildt myself a new PC. But it only boot sometimes.
When it boot, it boots up fine and everything runs smooth.
But often, when I press the power button on the PC, the fans spins for a second and that's all.
Could this be a defect PSU? Should I update the BIOS? A dead mobo?


Also, I have a network problem. I have installed the drivers on the MB disc, but still, when I plug in an ethernet cable nothing happens.
Any ideas?
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  1. You ask if you should update the BIOS. Of course you should. If there's a new version available it's always a good idea to have latest BIOS version.

    Check that you connect the ethernet cable in the proper plug. Some motherboard have a dual interface. Did you also try with a different cable? But as already mentioned check your Device Manager to make sure all the drivers are there.
  2. Xezat said:
    ... often, when I press the power button on the PC, the fans spins for a second and that's all.
    Could this be a defect PSU?
    Possibly, in fact very likely, yes

    Xezat said:
    A dead mobo?
    Possibly, yes but less likely

    What are your build specs here?
  3. I don't think it is a dead mobo really. Because, when it boots up, everything runs smooth. If the mobo or CPU was dead, it would most likely not
    worked that smooth, and sending me error messages. Should I do the paperclip test on the PSU? Because, I think the PSU is the problem :/
    I think, it also could be that when I press the power button, the startup signal reaches the mobo, but not the CPU. But idk-

    Specs:
    Motherboard: Asus Maximus Extreme V
    CPU: Intel i7 3770K
    RAM: Kingston HyperX 1600MHz 16GB CL9 1,65V
    GPU: EVGA Geforce GTX 680
    PSU: Corsair HX 850W PSU
    HDD: Seagate Barracuda 2TB
  4. I'm wondering (personally) if there wasn't a bad couple of HX's let loose by Corsair - I think I would be in touch with them about possible RMA for the PSU. Are you using a UPS or surge protector, if so, how old?
    For your networking, I will recommend getting the latest and greatest drivers from Asus directly
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