My TimelineX 4820T thinks it has more memory than it has

Hi, I have a TimelineX 4820T with 3Gb RAM and I replaced the RAM with two 4Gb Kingston sticks of the same speed. BOIS happily reported 8192Gb and I booted to Windows, which promptly crashed.

I then tried memtest86 from a USB stick. It corectly reported the two 4Gb sticks but this crashed too, so I started looking at chunks of memory. Then I realised, the upper testing boundary was about 9Gb! When I set the range from 0-8192Gb the tests passed perfectly.

When I tried with one stick, the same happened but it thought it had about 5Gb.

Why would the machine believe it has more memory than installed? Is this a fault in the memory or the laptop? I have the latest BIOS 1.25 but I don't see any useful options there and unfortunately cannot find another laptop to test with.

Any insight would be appreciated, thanks.

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laurent_14

Hello,

Could you give me the first ten characters of the computer serial number (S/N)? Only the first ten.
The memory modules part number?
What OS do you use exactly? Windows 7 64-bit?

pdgibbs

Hi, thanks for your reply. To answer your questions,

1. LXPSN02164...

2. KVR13S9S8K2/8

3. I have upgraded the pre-installed Windows 7 Home 64-bit to Windows 10 64-bit

laurent_14

Hello,

Have you done a clean install after the Windows 10 upgrade?

I suggest you these memory modules instead of Kingston.

pdgibbs

Hi, thanks for the response. It is an upgrade rather than a clean install but with memtest86 also failing I don't think it is Windows but I may give that a go. I think the Cricial memory option is probably my best bet as I noted from the link you provided that Crucial does list it as guaranteed compatible.

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