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Thread: New build won't power up.




  1. #1
    rhinosneros is offline Junior Member
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    Default New build won't power up.

    I just assembled a new box ... but it fails to power up.
    All components are new (mboard = AS Rock LGA1155 ATX 277 Extreme4).
    Hardware details are available in my profile.

    • All drives have securely attached SATA cables and power.
    • CPU and case fans function
    • Seagate 2TB hard drive doesn't power-up/spin
    • I can't even eject the DVD-RW drive door.
    • No screen display whatsoever.
    • I get no error beeps from the motherboard.


    How should I reasonably proceed with troubleshooting?

    In the way of background, my original computer was an IBM PC ... no hard disk drive, but with four 5" (full height) floppy disk drives (purchased from Computerland, in the winter of 1981). Since then (and over the 17 years immediately following) I've assembled hundreds of units professionally, including 386, 486, then Pentium CPU CAD workstations but nothing within these last fifteen years.

    Thanks in advance for any quality input.

  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: New build won't power up.

    The problem might be with your power supply, even if it is brand new.
    Can you test with another psu?
    Make sure that you have connected the power supply's 8-pin EPS12V connector to the motherboard.
    Verify that that the 24-pin psu power cable is fully seated and that there are no loose wires.
    You definitely have a power problem from your description.

    Your 24-pin memory might be a problem, 240-pin memory is OK. ;)
    Try booting with only one memory module installed.

    I always build and test a new system with the motherboard outside of the computer case with the mobo on a cardboard box.
    Disconnect all hardware that isn't necessary for booting into the bios including ssd, hard drives, optical drives, add-in cards, etc.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  3. #3
    rhinosneros is offline Junior Member
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    Default Re: New build won't power up.

    You referenced the "power supply's 8-pin EPS12V connector to the motherboard." That's new to me in the past there was no psupply connector for specifically powering the CPU. Attempting to identify the proper psupply connector and pin-set on the mboard,

    • The power supply has an 8-pin cable (2x4) whose connector is labeled CPU.
    • The Corsair website Tech Specs references the 8-pin connector as EPS. No CPU tag reference is made.
    • There is no User Manual (PDF) for the TX850M power supply on the Corsair website (that I can find). There is one for the TX850 V2, however. That manual references an 8-pin cable+connector as EPS12V CPU Cable (8-pin).
    • The ASRock motherboard has an 8-pin connector referenced in the user manual as ATX 12V Power Connector (ATX12V1).

    The seemingly inconsistent labeling is confusing. Are these all varied tags all referencing the same connection that I must make to correct the nonfunctioning system? I certainly don't want to make a power assignment error here. Thanks for clarifying.

  4. #4
    rhinosneros is offline Junior Member
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    Default Re: New build won't power up.

    Quote Originally Posted by profJim
    Your 24-pin memory might be a problem, 240-pin memory is OK. ;)
    I can't seem to locate my hardware spec in my profile. If you can point me in the right direction, I'll be sure to fix the clear typo. Thanks.

  5. #5
    WilliamM2 is offline Junior Member
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    Default Re: New build won't power up.

    The 8 pin (2x4) is the cable you need to plug into the motherboard. I haven't seen a power supply with any other 8 pin connector before. The connector is keyed, and won't fit if it's not the correct one.

  6. #6
    rhinosneros is offline Junior Member
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    Default Re: New build won't power up.

    Thanks for that feedback, William.

    The 8-pin connector snapped in place like a glove. After 1) plugging the power cord into the TX850M power supply, 2) turning the psupply ON using its rocker switch, then 3) pressing the case power button ... nothing different happened (fans still run, but nothing else does). I double checked to make sure that the power switch was properly connected to the motherboard.


    Hints?
    Ideas?

  7. #7
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: New build won't power up.

    The 8-pin (2x4) power supply cable (labeled CPU) needs to be plugged in to the 2x4 motherboard connector that ASRock labels ATX 12V Power Connector (ATX12V1).
    I won't confuse you with the fact that the power supply's 4-pin (2x2) ATX_12V cable could also plug in to the 8-pin ASRock labels ATX 12V Power Connector (ATX12V1), and the motherboard user manual should show you the only way that this 4-pin connector can be properly connected. Using the EPS12V 8-pin connector is always better. Never try to plug in the power supply's 8-pin pci-e cable into the motherboard EPS12V connector.
    For more psu cable information, check out All about the various PC power supply cables and connectors.

    With modern systems, your motherboard will not boot/post if you don't connect the EPS12V or ATX_12V power supply cable.

    System Specs portion of your forum profile: http://forums.tweaktown.com/profile.php?do=editprofile at the bottom of the profile page.
    Save changes when you're done editing.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  8. #8
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: New build won't power up.

    Get down to basics.
    Go through the user manual, one step at a time and make sure that you haven't missed any steps.
    If the dvd tray won't open and your hard drive still isn't spinning, there is still a power issue, possibly with your 24-pin psu main cable.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  9. #9
    rhinosneros is offline Junior Member
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    California USA
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    Default Re: New build won't power up.

    Thanks. I'll give the whole setup a thorough reevaluation.

  10. #10
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: New build won't power up.

    Oopsie....
    Your hard drive and optical drive are both powered by your power supply, not your motherboard.
    Your system should be able to boot into the bios with no drives connected.
    Unless you find a step that you missed, you will need to borrow another power supply to test with.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


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