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What should I do if my desktop computer won’t turn on?

2025-10-08 22:36:36 science and technology

What should I do if my desktop computer won’t turn on? Summary of popular solutions across the network in 10 days

Recently, "desktop computer won't turn on" has become a hot topic on social media and technology forums, with many users sharing their troubleshooting experiences. This article summarizes the solutions that have been hotly discussed across the Internet in the past 10 days and presents key information through structured data.

1. Ranking list of common fault causes (hot discussion in the past 10 days)

What should I do if my desktop computer won’t turn on?

RankingCause of failurefrequency of occurrenceTypical symptoms
1power problem42%Completely unresponsive/fan not spinning
2memory failure28%Repeated restart/alarm sound
3motherboard problem15%Some parts are not powered
4Graphics card failure8%There is sound but no display
5Hard drive damaged7%Stuck in LOGO interface

2. Step-by-step troubleshooting guide (organized based on popular tutorials for engineers)

Step One: Basic Check

1. Confirm that the power socket is normal (try to connect other electrical appliances to test)

2. Check whether the power cord is loose (confirm at both ends)

3. Observe the status of the power indicator light (some chassis have independent indicators)

Step 2: Hardware troubleshooting

operateCorrect phenomenonException handling
Short circuit power testThe fan should spinReplace power supply
Single memory bootCan enter BIOSClean the gold finger/change the slot
Minimal system testingHear a "beep" soundCheck the motherboard/CPU

3. Effectiveness statistics of popular solutions

methodsuccess rateApplicable scenariosOperation difficulty
CMOS discharge78%BIOS setting error★☆☆
Memory re-insertion65%Poor contact★☆☆
Replace power supply92%Power supply damaged★★☆
graphics card reset56%display problem★★☆

4. The latest emergency activation skills (from actual testing by technology bloggers)

1.Force power on: Disconnect all peripherals, keep only the motherboard power supply, short-circuit the green and black wires of the 24pin power interface (please operate with caution)

2.Enter safe mode: Press F8 key continuously (Windows7) or Shift+restart (Windows10+)

3.PE system rescue: Use U disk to start the PE system to back up data (you need to prepare the startup disk in advance)

5. Hardware fault self-test signal comparison table

alarm soundPossible malfunctionBrand differences
1 long 2 shortGraphics card problemAward BIOS
Continuous short beepsmemory failureAMI BIOS
1 long 3 shortkeyboard controllerPhoenix BIOS

6. Professional maintenance suggestions (from hot posts on the installation forum)

1.power problem: It is recommended to choose 80Plus certified power supply and leave 30% power margin.

2.Electrostatic protection: Touch metal objects to release static electricity before repair to avoid damaging components.

3.Data security: Prioritize hard disk data backup and then deal with hardware problems.

Through the above structured solutions, most desktop computers cannot be turned on can be effectively troubleshooted. If all the steps still cannot be resolved, it is recommended to contact a professional maintenance personnel to avoid expanding the scope of the fault.

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