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Windows 7: help! installed new motherboard now i'm missing RAM

13 Oct 2015   #1
frazer

Windows 7 Ultimate x64
 
 
help! installed new motherboard now i'm missing RAM

Hi all im new to this forum and looking for a little help . around 6 months ago my pc motherboard/processor died. i acquired a new one from flee baye, motherboard and processor package and set about repairing pc . i noticed then that my pc wasn't showing all the ram (i had 8GB) installed and now was showing 5 .does any of you wizzkids have any idea what i have done wrong or what i need to do , iv lived with it until now but some games are just not working with low ram ,

so far iv done :

checked ram are seated correctly and in right order (i have 2x2GB and 1x4GB)
looked around in bios and cant see anything
reset cmos
done a windows memory diagnostics or what ever its called and all cam back clear

this is what it says pleeeeeeese help

Version 6.1.7601 Service Pack 1 Build 7601
System Manufacturer Gigabyte Technology Co., Ltd.
System Model GA-78LMT-USB3
System Type x64-based PC
Processor AMD FX(tm)-8350 Eight-Core Processor, 4000 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date Award Software International, Inc. FA, 23/04/2013
SMBIOS Version 2.4
Installed Physical Memory (RAM) 5.00 GB
Total Physical Memory 3.48 GB
Available Physical Memory 1.11 GB
Total Virtual Memory 6.96 GB
Available Virtual Memory 4.89 GB
Page File Space 3.48 GB


My System SpecsSystem Spec
.
13 Oct 2015   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

What happens if you take the 2x2 sticks out. Do you get 4 GB then?

I'm wondering if the mobo is incompatible with that mixture of RAM...
My System SpecsSystem Spec
13 Oct 2015   #3
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

First off a mismatch of ram can always cause problems.
I would suggest suggest downloading the motherboard manual and installing the ram suggested and in the position the manual indicates.

Here is a little starter look. The manual will give more information.

GIGABYTE - Motherboard - Socket AM3+ - GA-78LMT-USB3 (rev. 4.1)

Quote:
  1. 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory (Note 1)
  2. Dual channel memory architecture
  3. Support for 1600(O.C.)/1333/1066 MHz memory modules
(Please refer "Memory Support List" for more information.)


You could also have a eBay reject product.
My System SpecsSystem Spec
.

13 Oct 2015   #4
frazer

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Mellon Head View Post
What happens if you take the 2x2 sticks out. Do you get 4 GB then?

I'm wondering if the mobo is incompatible with that mixture of RAM...
Installed Physical Memory (RAM) 2.00 GB
Total Physical Memory 1.72 GB
Available Physical Memory 440 MB
Total Virtual Memory 3.43 GB
Available Virtual Memory 2.00 GB


thats with the 1x4GB installed only
My System SpecsSystem Spec
13 Oct 2015   #5
frazer

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Layback Bear View Post
First off a mismatch of ram can always cause problems.
I would suggest suggest downloading the motherboard manual and installing the ram suggested and in the position the manual indicates.

Here is a little starter look. The manual will give more information.

GIGABYTE - Motherboard - Socket AM3+ - GA-78LMT-USB3 (rev. 4.1)

Quote:
  1. 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory (Note 1)
  2. Dual channel memory architecture
  3. Support for 1600(O.C.)/1333/1066 MHz memory modules
(Please refer "Memory Support List" for more information.)


You could also have a eBay reject product.
ill look into that mate when i buy some new ram thanks for the reply
My System SpecsSystem Spec
13 Oct 2015   #6
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Quote   Quote: Originally Posted by frazer View Post
Installed Physical Memory (RAM) 2.00 GB
Total Physical Memory 1.72 GB
Available Physical Memory 440 MB
Total Virtual Memory 3.43 GB
Available Virtual Memory 2.00 GB


thats with the 1x4GB installed only
Looks like you either have a bad stick, or the motherboard isn't recognizing the stick properly. Can you run Memtest86+ with that stick on the board and see how much RAM it sees? It will also test the stick thoroughly.

Memtest86+ - Advanced Memory Diagnostic Tool
My System SpecsSystem Spec
13 Oct 2015   #7
frazer

Windows 7 Ultimate x64
 
 

Installed Physical Memory (RAM) 4.00 GB
Total Physical Memory 3.48 GB
Available Physical Memory 2.37 GB
Total Virtual Memory 6.96 GB
Available Virtual Memory 5.77 GB
Page File Space 3.48 GB

this is with 1x2 and 1x4
My System SpecsSystem Spec
13 Oct 2015   #8
frazer

Windows 7 Ultimate x64
 
 

Installed Physical Memory (RAM) 3.00 GB
Total Physical Memory 1.72 GB
Available Physical Memory 710 MB
Total Virtual Memory 3.43 GB
Available Virtual Memory 2.32 GB
Page File Space 1.72 GB

this is with the other 1x2 and the 1x4
My System SpecsSystem Spec
13 Oct 2015   #9
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Judging by your last two posts, either all of your RAM is messed up, or it's your motherboard. I'm starting to suspect the mobo.

The thing is with the FX-8350, the memory controller is on the CPU die, not on the motherboard. Only the control interfaces are on the motherboard. It's possible that they have taken some damage from static electricity or over-voltage. It's also possible that the RAM slots are dirty. Before we get too crazy, it might be a good idea to get a can of compressed air and blow out the RAM slots to make sure there is no dust in them.

Do you have a friend that has a PC that you can test the RAM sticks in his/her computer? If you do, I'll bet that they show up as the right capacity.
My System SpecsSystem Spec
14 Oct 2015   #10
frazer

Windows 7 Ultimate x64
 
 

thanks guys ill try that , iv run that software and noticed that the gskill one is showing 2GB and not 4GB could this be down to voltage or clock speed ? i know nothing about either but read about them somewhere
My System SpecsSystem Spec
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 help! installed new motherboard now i'm missing RAM




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