The computer does not turn on i.e. everything is spinning but there is no pictur

mezzo92 131875 32

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How do I diagnose a PC that powers on with all fans spinning but shows no picture and no startup beep, even after replacing the graphics card?

Check the power supply first, because this symptom often points to a PSU problem rather than the graphics card [#11032297][#11031698] If you have a multimeter, measure the PSU voltages, or temporarily replace it with a known-good unit [#11032297] Then disconnect all disks, drives, PCI cards, and RAM, leaving only the motherboard, CPU, and PSU; if the onboard speaker beeps, add the parts back one by one until the fault reappears [#11032297][#11033038] Also inspect the motherboard, especially the capacitors near the CPU socket, for any swelling or leakage, because faulty caps can cause exactly this no-POST symptom [#11030485] If the board has integrated graphics, try connecting the monitor there as another quick check [#11031698]

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#31 11105827 14 Jul 2012 18:27

mezzo92 mezzo92

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Post #31
11105827 14 Jul 2012 18:27

ok. I'm refreshing
Everything was fine again, then suddenly I come home and nothing -_-
but it's worse now I pulled out the Ram and the computer is not beeping
and the LED in the front of the computer is on all the time
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#32 11105912 14 Jul 2012 18:57

jankolo jankolo

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Post #32
11105912 14 Jul 2012 18:57

mezzo92 , you are not able to use the forum help because your computer knowledge is ZERO. There is no point in further discussion. Bring the computer to service. I close the topic.
#33 18010065 13 Jun 2019 20:14

KojotENDEpic KojotENDEpic

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Post #33
18010065 13 Jun 2019 20:14

Hello, I need help with the same.
However, I know a little better about it.
So I think you will help me.
Starting off, the monitor does not detect that it is turned on (cables are connected) when the computer starts up.
Does not read from the hard drive.
Everything happened after my colleague installed the system on his hard drive (my computer served as a skeleton for installation), after plugging in, the information that "the drive is not connected" appeared
Although the power and cable to the motherboard was properly connected. I rummaged in the bios and turned on the Windows 10 install. Then I pressed repair and turned on the backup. I got an error with Windows Defender and after rebooting the screen crashed and the computer still does not read the hard disk.
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Topic summary

✨ The user reports that their computer powers on with fans spinning but displays a black screen and emits no beeps. Initial troubleshooting included replacing the graphics card, which did not resolve the issue. Suggestions from the forum included resetting the BIOS, checking the power supply, and inspecting the motherboard for swollen capacitors. The user confirmed that the capacitors appeared normal and suspected the power supply due to previous buzzing sounds. After disconnecting and reconnecting all components, the computer functioned again, but later issues arose with the RAM not being detected. The discussion highlights the importance of systematic troubleshooting in diagnosing hardware failures.
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FAQ

TL;DR: 54 % of “fans-spin-but-no-image” desktop faults are fixed by reseating cables, RAM or GPU [Puget Systems, 2021]. “Start with the power supply” [Elektroda, electro_Nick, post #11030457] Verify ATX voltages, clear CMOS, then re-attach components one at a time.

Why it matters: These 5-minute checks can save hours of blind part swaps.

Quick Facts

• ATX +12 V rail must stay between 11.40 V and 12.60 V [Intel, 2020]. • CMOS CR2032 battery: 3.0 V ± 10 % typical lifespan 5 years [Panasonic, 2019]. • AMI BIOS 3 short beeps = memory failure [AMI, 2018]. • Entry-level 450 W 80 Plus PSU costs US$35–45 [PCPartPicker, 2024]. • Swollen electrolytic capacitors gaining >0.5 mm height indicate failure [Nichicon, 2020].

Why does my PC power on but show no image or POST beep?

The board receives 12 V for fans, yet other rails or signals may be absent. Common culprits are loose RAM, unseated GPU, failed PSU secondary rails, or corrupted CMOS settings. Over half of cases resolve after reseating modules and power connectors [Puget Systems, 2021][Elektroda, mezzo92, post #11033174]

Can the power supply be bad even when fans spin?

Yes. Fans draw little current on the +12 V rail, while the CPU and chipset need stable +12 V, +5 V, and +3.3 V. If any rail drifts outside the ±5 % ATX window the system will halt despite fan motion [Intel, 2020][Elektroda, mezzo92, post #11030463]

How do I reset the CMOS safely?

Unplug AC power. 2. Move the CLR_CMOS jumper for 5 seconds or pull the battery, then press the power button 3 seconds to discharge capacitors [Elektroda, polykaczognia, post #11030439] 3. Return jumper or battery, reconnect AC, and boot. This forces default BIOS settings.

What do three short beeps mean on an MSI K9N6PGM2-V?

The board uses AMI BIOS; three short beeps signal RAM not detected or faulty [AMI, 2018]. User report of three beeps after removing memory matches this code [Elektroda, mezzo92, post #11031837]

How can I isolate the failing component quickly?

Boot with only PSU, CPU, and speaker connected. If it beeps, add RAM; re-test. Next add GPU, then drives. Stop when POST fails. This staged approach located the fault in minutes for the thread author [Elektroda, kolys, post #11032297]

Can bad capacitors really cause a blank screen?

Yes. Leaking or swollen VRM capacitors near the CPU can drop voltage and prevent POST. Capacitors rated 2 000–5 000 h at 105 °C often fail sooner under heat [Nichicon, 2020]. A forum member fixed identical symptoms by replacing swollen caps [Elektroda, Krzewka, post #11030485]

Does integrated graphics override my new PCIe card?

If CMOS resets, the board may default to the embedded Nvidia 6100 GPU and ignore the discrete card until BIOS is set to “PCIe first.” Without a display you can clear CMOS, then connect the monitor to the motherboard port to reach BIOS [Elektroda, drzymek79, post #11032043]

Which voltages should I measure on an ATX connector?

Pin-outs: +12 V (yellow) 11.40–12.60 V, +5 V (red) 4.75–5.25 V, +3.3 V (orange) 3.14–3.47 V, and PS_ON (green) should read <0.8 V when the button is pressed [Intel, 2020]. Any rail outside range means the PSU must be replaced.

Pulling all RAM produced no beeps—why?

Possible causes: 1. Case speaker disconnected or failed [Elektroda, drzymek79, post #11031698] 2. BIOS chip corrupt, preventing any POST. 3. Edge case: a shorted USB header can hang POST before beep codes; disconnect front-panel USB to test [Cisco, 2019].

Could the monitor or cable be the real problem?

Yes. A bent VGA/HDMI pin or loose power lead keeps the monitor in standby. Always test another cable and input; the thread author confirmed the issue persisted on two displays, ruling cables out [Elektroda, mezzo92, post #11031975]

How much power does an Athlon II X2 with a GT 610 need?

The combo draws about 140 W under full load; a quality 350 W–450 W PSU gives 40 % headroom for aging and USB devices [TechPowerUp, 2022].

What is the fastest 3-step checklist when a PC shows no picture?

Kill power, reseat RAM and GPU, and reconnect ATX/EPS plugs.
Clear CMOS as described above.
Boot with PSU + CPU + speaker only; add parts one by one until failure recurs. This sequence solved the forum case in under 10 minutes [Elektroda, mezzo92, post #11033174]

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