Expected Vdc output on a laptop w/BSOD

Essiesc

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May 5, 2016
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Terrible question, but necessary since I'm not an AC/DC expert. Would a laptop power adapter connected to a laptop that only booted to the BSOD and would not boot to the operating system (Windows) be expected to produce a lower output than normal (15.1 Vdc vs the listed 18.5 Vdc)? Or should a power adapter always produce the same Vdc output regardless of whether a laptop boots to the OS, BSOD or has no OS installed at all?

Adapter Specifications:
65W; 50-60 Hz
Input: 100-240V~1.7A
Output: 18.5V/3.5A

*The laptop PSU/rechargeable battery had also been removed at the time of the Vdc reading, if that makes any difference.

Thank you in advance for any insight!
 

Ironsounds

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Jul 31, 2011
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Hello... 1) a Power Supply/Battery can have a higher "Open circuit" voltage than a "Loaded one"
2) a "Battery Pack" in anything can go BAD... failure modes include "shorted" "open" between the installed multi cells themselves.
3) There are 'regulated" and "Non-regulated" power supplies... normal "open circuit" and "closed circuit" voltage reading/characteristics between them will be different.

1) is this the original power supply that came with the laptop?
2) How old is the battery in it?
 

Ironsounds

Distinguished
Jul 31, 2011
512
0
19,260
94
Hello... 1) a Power Supply/Battery can have a higher "Open circuit" voltage than a "Loaded one"
2) a "Battery Pack" in anything can go BAD... failure modes include "shorted" "open" between the installed multi cells themselves.
3) There are 'regulated" and "Non-regulated" power supplies... normal "open circuit" and "closed circuit" voltage reading/characteristics between them will be different.

1) is this the original power supply that came with the laptop?
2) How old is the battery in it?
 
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