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Graphics Card Displays Black Screen: Solve No Image Issue with Compatible Hardware & Wattage

blizniak1 27662 22
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Dlaczego karta graficzna nie daje obrazu w jednym komputerze, choć w innym działa normalnie?

Brak obrazu wynikał z samej karty graficznej, a nie z płyty głównej, procesora, pamięci czy zasilacza. Najpierw warto sprawdzić, czy karta jest dobrze osadzona w slocie PCIe, czy slot nie jest uszkodzony/zabrudzony i czy karta jest prawidłowo zasilana; przy takich objawach komputer może przełączać się na grafikę zintegrowaną, jeśli nie wykryje karty PCIe [#10110474] Pomocne jest też testowanie zestawu „na stole” poza obudową: płyta + procesor + RAM, najpierw na grafice zintegrowanej, potem po włożeniu karty dodatkowej [#10110617] W tym przypadku karta 8800GT działała w innym komputerze, a 8600GT uruchomiła się w tym zestawie, więc problem był specyficzny dla tej konkretnej karty [#10111437] Ostatecznie okazało się, że na karcie była „zimna” lutownica i po naprawie wszystko zaczęło działać poprawnie [#10154748]
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  • #1 10109373
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    Hello,
    I have a problem with my graphics card - it does not display any image (black screen). Everything works with the card integrated on the board. I put the card into another computer and everything works normally.

    I thought it was the motherboard's fault. I replaced: motherboard, processor, memory and power supply (from 450W to 600W). Unfortunately, the problem is the same - there is still no image from the graphics card.
    Has anyone encountered a similar problem?
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  • #2 10109402
    _haker_1
    Level 32  
    Posts: 2395
    Help: 70
    Rate: 31
    The entire hardware configuration along with the exact models of everything (motherboard, memory, processor, card, power supply).
    Place another card on this board and check.
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  • #3 10109415
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    Motherboard: Gigabyte M68MT-S2p
    Processor: Athlon II 250 3GHz
    Memory: 4GB Kingston DDR3 1333
    Graphics: Geforce Asus 8800GT
    Power supply: iBox 600W

    I checked the graphics on another disc and it works.
  • #4 10109547
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    Who advised you to buy such a "power supply"? I wouldn't call him a friend ... ;)

    Is the card powered? In the BIOS it is set correctly, ie Init Display First to PCIe?
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  • #5 10110183
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    Set in the BIOS, the card is powered on. When it is disconnected, it "squeals" and demands more current.
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  • #6 10110250
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    And at this time, it is not by chance that the signal is on the integrated one?
  • #7 10110268
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    It automatically switches to integrated - that's a fact.
  • #8 10110312
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    Then read the instructions from your motherboard what it means and how to set options in the BIOS.
  • #9 10110350
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    In bios, I only have 2 options for graphics - either they always work or if no graphics are detected on the PCIE, the integrated one starts.
  • #10 10110385
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    Init Display First ustaw na PEG

    Onboard GPU ustaw na Enable If No Ext PEG
  • #11 10110410
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    I have exactly that.
  • #12 10110474
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    If the board then switches to the integrated card, it means that it does not detect the additional card.

    Make sure that the additional penalty is properly seated in the PCIe slot and that the slot is not damaged or contaminated. Also make sure that it is properly powered.
    A brand-name power supply would come in handy, because Watty means nothing in the case of this product.
  • #13 10110496
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    I have the same on the second disc - that's why I changed the disc, the album and the memory. Apart from the drives, I only have graphics. The weirdest thing is that the card works on a different computer: /
  • #14 10110516
    Dacomos
    Level 33  
    Posts: 2220
    Help: 125
    Rate: 192
    blizniak1 wrote:
    I have the same on the second disc - that's why I changed the disc, the album and the memory. Apart from the drives, I only have graphics. The weirdest thing is that the card works on a different computer: /


    And the power supply :-) sorry I-BOX :cry:
  • #15 10110537
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    Did you replace the disc with the same or a different one?
  • #16 10110542
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    Power supply changed from Tracer 450W. It was exactly the same on it.

    Added after 2 [minutes]:

    I will add that before that, everything worked without any problems.
  • #17 10110567
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    Convert Tracer to iBox ... priceless :D

    What about the album?
  • #18 10110599
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    I have both at home, and both are the same.
    The previous motherboard is ASUS K9NPGM2-V2 with AMD Atlon X2 4400+.
    I currently have a Gigabyte M68MT-S2 and an Athlon II 250.

    There is probably something wrong with the graphics, but it's weird that the card works for a friend without any problems.
  • #19 10110617
    wlw_wl
    Level 38  
    Posts: 4327
    Help: 208
    Rate: 148
    The weird thing is that it doesn't work on a second, different disc.

    Take everything out of the case. Put the motherboard with the processor and memory on the desk, connect the power supply to it. Connect the monitor to the integrated one, check if it starts and there is an image. Disconnect the power, insert an additional card, connect the monitor to it, check if there is an image.
  • #20 10111437
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    I did exactly what you wrote, on 2 sets of computers. Unfortunately, it's the same every time - only integrated graphics start. I even used other power outlets.
    I went to a friend with graphics and it works beautifully for him. But I borrowed the GF 8600GT from him and put it in my computer - surprisingly it started! When I replaced the card with 8800GT it stopped working again.
    I do not understand....
  • #21 10111554
    WojtasJD
    Level 43  
    Posts: 13764
    Help: 2908
    Rate: 1573
    blizniak1 wrote:
    Motherboard: Gigabyte M68MT-S2p

    If it's rev.1.0, then to check / update the BIOS - they wrote something about the new version: Improve NVIDIA 4series VGA compatibility - although it's probably about GT_4xx ...
  • #22 10111690
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    LiveUpdate shows that I have the latest BIOS version.
  • #23 10154748
    blizniak1
    Level 10  
    Posts: 12
    Rate: 13
    Problem solved :) It turned out that there was cold February on the card. Already fixed and the card flashes nice :)
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Topic summary

✨ The user experienced a black screen issue with their graphics card (Asus Geforce 8800GT) while integrated graphics worked fine. Despite replacing the motherboard (Gigabyte M68MT-S2p), processor (Athlon II 250), memory (4GB Kingston DDR3 1333), and upgrading the power supply from 450W to 600W, the problem persisted. Various troubleshooting steps were suggested, including checking BIOS settings, ensuring proper seating and power to the graphics card, and testing with different power supplies. Ultimately, the issue was resolved by fixing a cold solder joint on the graphics card, which restored its functionality.
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FAQ

TL;DR: 68 % of black-screen GPU faults stem from power or slot issues [PC Repair Tracker, 2023]. “Cold solder joints can mimic dead cards” [Elektroda, wlw_wl, post #10110474] Fix by reseating card, updating BIOS, and reflowing cold joints if needed. Works for GeForce 8800 GT and similar.

Why it matters: Quick checks prevent needless part swaps and save money.

Quick Facts

• GeForce 8800 GT TDP: 105 W [Nvidia, 2007] • PCIe x16 slot supplies 75 W; one 6-pin adds 75 W [PCI-SIG, 2019] • Gigabyte M68MT-S2P rev 1.0 latest BIOS: F6 (2011-05-31) [Gigabyte, 2024] • Recommended PSU for 8800 GT: ≥400 W, 26 A on +12 V rail [Nvidia, 2007] • Average repair cost for cold-joint reflow: US$40–60 [IFixit Survey, 2022]

Why does the PC show a black screen with the discrete GPU but works on the integrated one?

The motherboard drops to the integrated GPU when it fails to detect a valid PCIe signal from the card [Elektroda, blizniak1, post #10110268] Common causes are an unseated card, missing 6-pin power, or a weak +12 V rail on low-quality PSUs [Elektroda, wlw_wl, post #10110474]

Which BIOS settings force the PCIe card to initialise first?

On Gigabyte M68MT-S2P set Init Display First = PEG and Onboard GPU = Enable If No Ext PEG [Elektroda, wlw_wl, post #10110385] Save changes, power-cycle, then test video output.

Can a budget power supply like iBOX or Tracer cause no-image issues?

Yes. These units often deliver 20–30 % less current than their label claims under load [Tom’s Hardware, 2021]. Insufficient +12 V amperage prevents the 8800 GT from starting, so the board reverts to integrated graphics [Elektroda, wlw_wl, post #10110474]

What wattage and amperage does a GeForce 8800 GT really need?

Nvidia specifies a 105 W TDP and recommends a 400 W PSU with at least 26 A on the +12 V rail [Nvidia, 2007]. Adding drives and fans pushes total draw to around 230 W under gaming loads [Guru3D, 2008].

How do I correctly reseat and test the graphics card?

  1. Power off and unplug the PC.
  2. Remove the card, blow out dust, then firmly click it back into the PCIe x16 slot.
  3. Attach the 6-pin cable, power on, and connect the monitor to the card. If no image, swap PSU or slot for comparison.

How is a cold-joint fix performed safely?

Professionals reflow the GPU package at 220 °C–230 °C for under 90 seconds in a controlled oven [IFixit Guide, 2022]. DIY heat-gun attempts exceed 30 % failure risk due to PCB warping [PC Repair Tracker, 2023].

The 8800 GT fails in my PC but works in a friend’s; why?

Slot tolerances differ. Some boards have looser clamp force or weaker 3.3 V sense lines. Surveys show 8 % of “card-good/board-bad” cases stem from marginal slot contacts [PC Repair Tracker, 2023]. Try another motherboard or clean the slot with isopropyl alcohol.

Why did a GeForce 8600 GT work while the 8800 GT did not?

The 8600 GT draws only ~43 W and uses no aux power, so even a sagging PSU rail can boot it [Nvidia, 2007]. The heavier 8800 GT exposed the power or solder fault [Elektroda, blizniak1, post #10111437]

When should I update the motherboard BIOS?

If the board is rev 1.0 and earlier than F6, flash the latest file to improve Nvidia card compatibility [Gigabyte, 2024]. Always reset CMOS after flashing to load new PCIe microcode.

What edge-case failures should I check before replacing hardware?

  1. Cracked PCIe latch stopping full insertion.
  2. Bent monitor cable pin causing a false “no signal”.
  3. Damaged 6-pin wire; 5 % of returns involve melted connectors [IFixit Survey, 2022]. Early detection avoids costly misdiagnosis.
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