iMac high CPU usage running very slow by kernel_task

Question 1

1 crwdns2930801:0crwdne2930801:0

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931741:0crwdne2931741:0

Huk 14, 2024

commented Huk 14, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 2

1 crwdns2930801:0crwdne2930801:0

Difference between LM270WQ1 (SD)(F1) and LM270WQ1 (SD)(F2) displays

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

amak79 23

crwdns2942989:0crwdne2942989:0

Mha 6, 2024

answer accepted Mha 6, 2024 crwdns2933505:0crwdne2933505:0 amak79

Question 3

2 crwdns2873741:0crwdne2873741:0

No chime, no boot, display on, but black - all leds on

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

medoc

crwdns2931741:0crwdne2931741:0

Mha 4, 2024

commented Mha 4, 2024 crwdns2933505:0crwdne2933505:0 medoc

Question 4

1 crwdns2930801:0crwdne2930801:0

How to best diagnose a dead screen vs. the graphic card

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Zach 5.9crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Maw 22, 2024

answered Maw 22, 2024 crwdns2933505:0crwdne2933505:0 Zach

Question 5

2 crwdns2873741:0crwdne2873741:0

Removing the LCD cable from the back iMac display

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

Jude Taylor

crwdns2931217:0crwdne2931217:0

Kul 18, 2025

answered Kul 18, 2025 crwdns2933505:0crwdne2933505:0 Jude Taylor

Question 6

1 crwdns2930801:0crwdne2930801:0

Why iMac gets stuck on every attempt to start it?

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931741:0crwdne2931741:0

Mud 31, 2024

commented Mud 31, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 7

1 crwdns2930801:0crwdne2930801:0

How to load Mac OS on new SSD drive

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Mud 12, 2024

answered Mud 12, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 8

1 crwdns2930801:0crwdne2930801:0

Determine if there is a SATA SSD or Blade SSD installed

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

KodaChrome 957

crwdns2931741:0crwdne2931741:0

Dzi 10, 2024

commented Dzi 10, 2024 crwdns2933505:0crwdne2933505:0 KodaChrome

Question 9

1 crwdns2930801:0crwdne2930801:0

iMac 27 inch late-2013 not starting up after upgrades

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

stephennabet 11

crwdns2942989:0crwdne2942989:0

Dzi 1, 2024

answer accepted Dzi 1, 2024 crwdns2933505:0crwdne2933505:0 stephennabet

Question 10

1 crwdns2930801:0crwdne2930801:0

Problems after opening, cleaning and replacing processor

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Robbe Meersman 11

crwdns2942989:0crwdne2942989:0

Yan 14, 2024

answer accepted Yan 14, 2024 crwdns2933505:0crwdne2933505:0 Robbe Meersman

Question 11

2 crwdns2873741:0crwdne2873741:0

Bad SMC, CPU socket, sensors or logic board?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

jeffphil

crwdns2931217:0crwdne2931217:0

Huk 15, 2024

answered Huk 15, 2024 crwdns2933505:0crwdne2933505:0 jeffphil

Question 12

1 crwdns2930801:0crwdne2930801:0

No power, only one diag light is on

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Sun 17, 2024

answered Sun 17, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 13

1 crwdns2930801:0crwdne2930801:0

iMac - PCIe slot - yes / no

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

JZ99 21

crwdns2942989:0crwdne2942989:0

N'w 29, 2023

answer accepted N'w 29, 2023 crwdns2933505:0crwdne2933505:0 JZ99

Question 14

1 crwdns2930801:0crwdne2930801:0

Highest read / write for this device w/ PCIe SSD

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

JZ99 21

crwdns2942989:0crwdne2942989:0

N'w 28, 2023

answer accepted N'w 28, 2023 crwdns2933505:0crwdne2933505:0 JZ99

Question 15

1 crwdns2930801:0crwdne2930801:0

How to switch from HDD to PCIe SSD?

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931741:0crwdne2931741:0

Huk 11, 2023

commented Huk 11, 2023 crwdns2933505:0crwdne2933505:0 Dan

Question 16

1 crwdns2930801:0crwdne2930801:0

got the Thunderbolt symbol on my screen of my iMac

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Nhl 30, 2023

answered Nhl 30, 2023 crwdns2933505:0crwdne2933505:0 Dan

Question 17

1 crwdns2930801:0crwdne2930801:0

Swapping cracked display (is it possible?)

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Zach 5.9crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Mha 31, 2023

answered Mha 31, 2023 crwdns2933505:0crwdne2933505:0 Zach

Question 18

1 crwdns2930801:0crwdne2930801:0

Add an hdmi output to the iMac

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931741:0crwdne2931741:0

Mha 18, 2023

commented Mha 18, 2023 crwdns2933505:0crwdne2933505:0 Dan

Question 19

1 crwdns2930801:0crwdne2930801:0

Internal ssd cannot be formatted

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.4crwdns2936485:0crwdne2936485:0

crwdns2931741:0crwdne2931741:0

Kho 29, 2023

commented Kho 29, 2023 crwdns2933505:0crwdne2933505:0 Dan

Question 20

2 crwdns2873741:0crwdne2873741:0

Is it possible to exclusively use a PCIe SSD on this mac?

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

Himovies

crwdns2931217:0crwdne2931217:0

Kho 19, 2023

answered Kho 19, 2023 crwdns2933505:0crwdne2933505:0 Himovies

crwdns2944620:0iMac Intel 27" EMC 2639crwdne2944620:0

iMac Intel 27" EMC 2639 crwdns2944634:0crwdne2944634:0