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RAM went from 32GB to 16GB inexplicably Vengeance LPX


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Hello, I have an almost 4-year-old Corsair Vengeance LPX DDR 4 32G (2x16) 3200.

Till recently I saw my computer is using the whole 32GB, however, I noticed that now I only see 16GB of RAM. (15.9GB to be exect)

 

In the BIOS I see only 16384mb.

In Task Manager I see in the top 32GB, but only 16GB in use.

Both 2 slots are in use.

In device specifications/ I see 32GB installed but only 15.9GB in use.

 

I tried reseating and changing slots but it didn't help.

 

Strange thing is that when I try to boot with only one stick instead 2 things happen:

1st stick - the computer goes into power-saving mode and shuts down.

2nd stick - nothing boots, just all the fans speed up and get very loud, but that's it.

 

I have AMD Ryzen 7 1700x and Asus Prime x370-pro.

 

Thank you.

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  • Corsair Employees

Hey Pavman,

 

Sounds like it might just be a single stick failure.

Try a CMOS reset, and testing one stick at a time in the primary slot

A memtest (copy/pasted below) will also highlight if the kit might be faulty or not

 

Please run memtest86 from a bootable USB to test the RAM

Downloadable from https://www.memtest86.com/

Full instructions can be found on the site.

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