F5F Stay Refreshed Hardware Desktop The CPU cable is connected, but your PC isn’t functioning properly.

The CPU cable is connected, but your PC isn’t functioning properly.

The CPU cable is connected, but your PC isn’t functioning properly.

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Kaymary10
Member
152
11-19-2025, 07:53 AM
#1
I recently got a new motherboard, CPU, and ran everything smoothly. I needed a 2 plug to get it at full power. I had the CPU cable ready, turned off the PC, tried connecting it again, but it still wouldn’t turn on. After unplugging it, nothing worked either. I’m really stressed because I spent a lot on these upgrades and need my PC for work and exams. Please help me—thank you all! CC
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Kaymary10
11-19-2025, 07:53 AM #1

I recently got a new motherboard, CPU, and ran everything smoothly. I needed a 2 plug to get it at full power. I had the CPU cable ready, turned off the PC, tried connecting it again, but it still wouldn’t turn on. After unplugging it, nothing worked either. I’m really stressed because I spent a lot on these upgrades and need my PC for work and exams. Please help me—thank you all! CC

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papercut3
Member
221
12-10-2025, 01:22 AM
#2
You're asking about the meaning of "CPU 2 plug." It refers to the standard power connection for the CPU, which is a 4+4 pin EPS power connector. Most systems work just fine with this single connector, and extra connectors aren't needed.
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papercut3
12-10-2025, 01:22 AM #2

You're asking about the meaning of "CPU 2 plug." It refers to the standard power connection for the CPU, which is a 4+4 pin EPS power connector. Most systems work just fine with this single connector, and extra connectors aren't needed.

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Darkchet_
Junior Member
42
12-10-2025, 02:29 AM
#3
Basically, There’s a 2+2 pin next to a i think 4+4 and it’s labelled cpu 2, my dad reckons i needed it, he’s been working on pcs for a while aswell so i didn’t seconds question him. If I didn’t need it, like you said, how can i get it to turn back on because currently it’s permanently off? Thanks a bunch! Cc
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Darkchet_
12-10-2025, 02:29 AM #3

Basically, There’s a 2+2 pin next to a i think 4+4 and it’s labelled cpu 2, my dad reckons i needed it, he’s been working on pcs for a while aswell so i didn’t seconds question him. If I didn’t need it, like you said, how can i get it to turn back on because currently it’s permanently off? Thanks a bunch! Cc

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Beeny
Member
201
12-10-2025, 05:44 AM
#4
I don't have a system, but I'm here to help you with any questions you might have!
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Beeny
12-10-2025, 05:44 AM #4

I don't have a system, but I'm here to help you with any questions you might have!

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UDShiv
Junior Member
3
12-10-2025, 07:53 AM
#5
Board: Mag Z490 Tomahawk CPU – i7 10700k (probably) RAM: 16GB (two 8GB DDR4) Power Supply: EVGA bronze 750 BQ GPU – SSD: Samsung 1TB 3x500MB storage
I think that’s all I know about this setup.
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UDShiv
12-10-2025, 07:53 AM #5

Board: Mag Z490 Tomahawk CPU – i7 10700k (probably) RAM: 16GB (two 8GB DDR4) Power Supply: EVGA bronze 750 BQ GPU – SSD: Samsung 1TB 3x500MB storage
I think that’s all I know about this setup.

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MatGam3r
Member
78
12-10-2025, 12:04 PM
#6
You don’t require the second 8-pin connector; it’s only needed for very high overclocking and won’t push you close to its limits. Regarding your concern, are there any indications of activity when pressing the power button? Did you unintentionally remove anything while connecting the extra 8-pin?
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MatGam3r
12-10-2025, 12:04 PM #6

You don’t require the second 8-pin connector; it’s only needed for very high overclocking and won’t push you close to its limits. Regarding your concern, are there any indications of activity when pressing the power button? Did you unintentionally remove anything while connecting the extra 8-pin?

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Sacredsaur_
Member
148
12-10-2025, 09:02 PM
#7
I really think I might have looked at it several times but didn’t catch the problem. What should I do next? Also, does this mean I don’t need the extra cable? Thanks!
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Sacredsaur_
12-10-2025, 09:02 PM #7

I really think I might have looked at it several times but didn’t catch the problem. What should I do next? Also, does this mean I don’t need the extra cable? Thanks!

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Alterfuse
Member
67
12-10-2025, 10:02 PM
#8
The cable isn't required. One 8-pin connector can handle about 360W independently, provided the power source can manage it. Do you have a paperclip available?
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Alterfuse
12-10-2025, 10:02 PM #8

The cable isn't required. One 8-pin connector can handle about 360W independently, provided the power source can manage it. Do you have a paperclip available?

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molresa
Junior Member
26
12-11-2025, 03:41 AM
#9
It seems you're questioning your ability to answer this simple question, even though you think you can. That’s okay—sometimes self-doubt shows up before we realize it.
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molresa
12-11-2025, 03:41 AM #9

It seems you're questioning your ability to answer this simple question, even though you think you can. That’s okay—sometimes self-doubt shows up before we realize it.

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iKegreenS_
Posting Freak
878
12-22-2025, 02:38 PM
#10
Remove all cables from your motherboard, graphics card, drives, etc. Attach one end of a paperclip to the PS_ON# pin on the motherboard connector, using one of the ground pins in the same connector. Refer to the diagram for your motherboard/ATX connector to ensure correct wiring. Make sure the power supply is off and unplugged before proceeding. Once connected, plug the power supply in and turn it on. This will connect the wires as intended when you press the power button.
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iKegreenS_
12-22-2025, 02:38 PM #10

Remove all cables from your motherboard, graphics card, drives, etc. Attach one end of a paperclip to the PS_ON# pin on the motherboard connector, using one of the ground pins in the same connector. Refer to the diagram for your motherboard/ATX connector to ensure correct wiring. Make sure the power supply is off and unplugged before proceeding. Once connected, plug the power supply in and turn it on. This will connect the wires as intended when you press the power button.

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