1 Rookie
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68
July 6th, 2025 14:35
Dell Latitude E7470 will not wake from sleep mode - at all - windows completely inaccessible
I have done a fresh Windows 10 Pro install on my Dell, using a boot disk, Win 11 is not compatible, and Windows is completely up to date, and BIOS reset to factory, however the laptop will not power on from sleep mode. I can confirm that the laptop is sleeping as the LED on the power button is gently pulsing, indicating sleep mode.
The laptop will only power on if the battery is unplugged and replugged. Shut down and restart seems to work. The charging cable, also works - but just charges the battery.
I cannot even turn off the laptop by holding the power button, I tried holding up to 2 minutes - no effect.
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langer650
1 Rookie
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20 Posts
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July 16th, 2025 14:04
And not made a CMOS reset before ?
anne_droid
3 Apprentice
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649 Posts
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July 6th, 2025 18:16
Hi
Anything resembling Fast Start Up, Fast Boot etc, IMHO, should be turned off/disabled.
mryash
1 Rookie
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7 Posts
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July 7th, 2025 20:08
Hello, I unchecked the first one, but it doesn't change anything unfortunately
langer650
1 Rookie
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20 Posts
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July 7th, 2025 21:31
The 7470/80/90 seem bitchy when it comes to starting with battery.
Would make CMOS reset in such a case.
The very first start after that takes a long time, not surprising, patience.
mryash
1 Rookie
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7 Posts
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July 14th, 2025 18:05
I've done a factory reset in the BIOS but unfortunately the problem persists. Are there any other solutions?
mryash
1 Rookie
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7 Posts
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July 19th, 2025 21:57
@langer650 the CMOS reset worked!! I Youtubed how to do it, removed the CMOS battery and it's working, thank you!!