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Thread: New Pc - Switch On Pc & Cpu Fan & Case Fans Come On, But Blank Screen On Monitor

  1. #1
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    New Pc - Switch On Pc & Cpu Fan & Case Fans Come On, But Blank Screen On Monitor

    Hi,

    I have just recently built a brand new pc.
    I have run a range of checks and I think the motherboard is defective.

    Spec:
    CPU - AMD ATHLON 64 3800
    MEMORY - CRUCIAL 2GB DDR 400
    POWER SUPPLY - TAGAN TG480-U01
    GRAPHICS CARD - XFX 7600GT FATAL1YR
    MONITOR - SAMSUNG TFT MONITOR SM940BW

    Problem: BLANK SCREEN ON MONITOR

    I switch on the pc - i get no beeps, no power led light comes on, but CPU cooler fan, 2 case fans & the 2 motherboard small fans all come on.
    The blue leds are flashing on the PCI slots, but not the PCI Express slot 1 where the graphics card is installed.
    The graphics card has no additional power connectors.
    I have connected the PC & monitor by way of DVI connector lead that came with the TFT monitor.
    When I switch on the monitor it asks for analog or digital (this is correct according to Samsung manual). Once I select digital there is just a blank screen.
    I have disconnected all the RAM and rebooted the pc, but i get no beeps.
    I have reset the CMOS, but still the same.
    I have changed the internal speaker cable around, but still no beeps.
    I have connected the 4 pin power connector to ATX4P1 socket for graphics card, but still I get a blank screen after selecting Digital on the monitor.

    Can anyone help?

  2. #2
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    If you get no beeps then chances are it is your motherboard that's broke.

  3. #3
    Senior Member kalniel's Avatar
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    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel Xeon X5680
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • nVidia GTX 1060 6GB
      • PSU:
      • Seasonic 600W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 10 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps
    Or the speaker is. Doesn't matter which way around the cable is techincally. However it's easy to get the power light cable the wrong way around

    Could be as simple as incorrect BIOS settings or a short to the case.

    What motherboard is it?

  4. #4
    Splash
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    Try it without the RAM?

  5. #5
    Senior Member kalniel's Avatar
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    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel Xeon X5680
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • nVidia GTX 1060 6GB
      • PSU:
      • Seasonic 600W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 10 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps
    Quote Originally Posted by Splash View Post
    Try it without the RAM?
    .
    Quote Originally Posted by Sonor View Post
    Hi,
    I have disconnected all the RAM and rebooted the pc, but i get no beeps.

  6. #6
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    • Re-Invented's system
      • Motherboard:
      • Asus P5W Deluxe
      • CPU:
      • Core 2 Duo E6600
      • Memory:
      • 2x1 GB Geil 6400
      • Storage:
      • 2x 320 Seagate Drives SATA
      • PSU:
      • 700w FSP Epsilon
      • Case:
      • Silverstone TJ0?
      • Operating System:
      • Vista Ultimate
      • Monitor(s):
      • 43" Pioneer 436XDE
      • Internet:
      • Be There 24mb
    take the gfx card out see if u get beeps

    Lee

  7. #7
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    If the PC beep speaker is bust, then it is the mobo that's damaged at that speaker is part of the mobo.

  8. #8
    Splash
    Guest
    Quote Originally Posted by kalniel View Post
    .
    eep, missed that part . What motherboard is it? (or did I miss that too? Not having a good day...)

  9. #9
    Senior Member
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    • Re-Invented's system
      • Motherboard:
      • Asus P5W Deluxe
      • CPU:
      • Core 2 Duo E6600
      • Memory:
      • 2x1 GB Geil 6400
      • Storage:
      • 2x 320 Seagate Drives SATA
      • PSU:
      • 700w FSP Epsilon
      • Case:
      • Silverstone TJ0?
      • Operating System:
      • Vista Ultimate
      • Monitor(s):
      • 43" Pioneer 436XDE
      • Internet:
      • Be There 24mb
    Quote Originally Posted by Budding View Post
    If the PC beep speaker is bust, then it is the mobo that's damaged at that speaker is part of the mobo.
    The speaker only connects to the mobo its not onboard

    Lee

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    Hi,

    Thanks for your help & I have managed to get the computer to boot up.
    It turned out that the 4pin ATX power connector was loose.
    Cheers

  11. #11
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    my motherboard is ECS KN1 SLI EXTREME SOCKET 939

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