pc hardware disconnections

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Elffin
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2015/06/26 16:47:43 (permalink)

pc hardware disconnections

Recently my pc has become rather dodgy.

After switching on and the computer is active... strange things happen.. my usb keyboard. becomes un responsive.... sometimes the broadband...

Even starting the computer has been a problem.. sticks on bios detail page..

Has any body heard of something similar? Could it be PSU or motherboard problem?
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    Doktor Avalanche
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    Re: pc hardware disconnections 2015/06/26 17:59:53 (permalink)
    Unplug your USB devices one by one to see if they are causing issues. A bios update and firmware updates everywhere may help but use caution you don't want it freezing when you are updating. Could also be a dodgy USB cable.

    Other thing to do is reseat everything such as your memory. Maybe your CPU needs a reapplication of thermal paste. Could be a heat issue....

    If it's freezing before the OS starts it's def hardware.
    post edited by Doktor Avalanche - 2015/06/26 18:11:11

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    tomixornot
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    Re: pc hardware disconnections 2015/06/26 21:24:30 (permalink)
    > Even starting the computer has been a problem.. sticks on bios detail page.. 
     
    This sometimes happen while booting my old pc. In my case, the video card got lose and needs a bit of pressing and a reboot is fine.

    Albert


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    #3
    robert_e_bone
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    Re: pc hardware disconnections 2015/06/27 04:19:13 (permalink)
    I would check out the power supply - I just went through similar issues with one of my computers, and it turned out there was just a tad too much drain on the power supply, and it would manifest in different ways - different devices wigging out or not being detected.
     
    I ended up getting a new 750 watt power supply for it, and all is well again.
     
    I figured it out by disconnecting lots of devices and then it started working right, and I would try different hardware combos and things would work if not too many things connected.
     
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    #4
    Elffin
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    Re: pc hardware disconnections 2015/06/28 16:12:54 (permalink)
    Hi thanks for all of your replies....  really appreciate this 
     
    Might be a good idea to change both motherboard and psu..
     
    Only other evidence that has occurred was that my external (powered by adapter) hard drive would also drop out...  lose its usb connection and become blank..
     
    My house electric line could have been hit by lightning last September and my telephone wire was defnitely hit since it messed up the router... (computer worked fine after even though it was connected via ethernet cable!) so would it affect psu or the board?   By would these problems take so much time to occur?
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    slartabartfast
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    Re: pc hardware disconnections 2015/06/28 17:24:10 (permalink)
    You don't have USB suspend enabled, do you?
    http://helpdeskgeek.com/windows-xp-tips/prevent-windows-from-powering-off-usb-device/
     
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    kevinwal
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    Re: pc hardware disconnections 2015/06/29 02:38:42 (permalink)
    As other have suggested, I'd eliminate the cables and reseat everything in the machine before I'd think about replacing motherboards and such. Good call on the thermal paste heat issue, I've had that happen to me. Also, consider running a full memory test to eliminate issues there.
     
    Sometimes though, it really is a hardware problem. To check if your power supply is taxed too heavily, unplug devices and pull PCI cards to see if things stabilize. I suggest you do things one at a time to help you identify the problem more easily.
    #7
    Doktor Avalanche
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    Re: pc hardware disconnections 2015/06/29 19:56:13 (permalink)
    slartabartfast
    You don't have USB suspend enabled, do you?
    http://helpdeskgeek.com/windows-xp-tips/prevent-windows-from-powering-off-usb-device/
     

     
    He gets issues before he boots windows...
    post edited by Doktor Avalanche - 2015/06/29 20:02:20

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    Elffin
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    Re: pc hardware disconnections 2015/07/20 15:50:46 (permalink)
    hi.. so psu problems it is

    Any suggestions in regards to a Psu?

    I need 750watt. and possibly 6 satas. and board has a built in firewire too.
    gfx is a BFG NVIDIA 8800gts 640mb..

    Totally confused about rails n voltages tbh!
    #9
    Doktor Avalanche
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    Re: pc hardware disconnections 2015/07/20 17:45:02 (permalink)
    What makes you conclude it's a PSU problem?
    What did you try here?

    Cheers..

    Sonar Platinum(64 bit),Win 8.1(64 bit),Saffire Pro 40(Firewire),Mix Control = 3.6,Firewire=VIA,Dell Studio XPS 8100(Intel Core i7 CPU 2.93 Ghz/16 Gb),2 x 1TB SSD (Samsung EVO 850),GeForce GTX 460,Yamaha DGX-505 keyboard,Roland A-300PRO,Roland SPD-30 V2,FD-8,Triggera Krigg,Shure SM7B,Yamaha HS5. Rap Pro,Maschine Studio+Komplete 9 Ultimate+Kontrol Z1,Addictive Keys,Waves Silver,Izotope Nectar elements,Overloud Bundle,Geist,Acronis True Image 2015.
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    Elffin
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    Re: pc hardware disconnections 2015/07/20 18:00:47 (permalink)
    Bought a replacement motherboard... usbs fail to initiate drivers unless attached to my powered usb hub.
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    Beagle
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    Re: pc hardware disconnections 2015/07/21 08:34:09 (permalink)
    Elffin
    Bought a replacement motherboard... usbs fail to initiate drivers unless attached to my powered usb hub.

    powered USB hubs can be an issue in themselves.  I suggest you disconnect all USB, boot that way.  then one by one add usb devices back in.  it will take some time, but you may find the problem when you get to a point.
     
    including connecting those devices up directly to the computer without using the hub.  I realize you probably don't have enough ports, but try it without it.

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    Elffin
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    Re: pc hardware disconnections 2015/07/22 17:19:38 (permalink)
    Having fun with this!

    changed for a similar motherboard and psu.

    Alas same probs! must be a controller unit /driver problem...or Bios.. (which is updated). - though I suspect that the data might be corrupted ... cmos reset to follow!

    again, thanks for your help guys.
    #13
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