Memory Faults

manisinghb · 8 Jan 2010 at 22:15

Hi guys, i have 6gb DDR3 Corsair memory (3x2gb sticks) but the system picks up 6.00GB RAM (4.00GB usable) and says i am running on a dual channel when it should be triple? i have tried switching the sticks around etc to see if any are faulty but all are running fine/ any suggestions??

theron · 8 Jan 2010 at 22:56

what operating system? windows xp/vista/7 32 bit?

manisinghb · 9 Jan 2010 at 01:19

windows 7 64 bit

Corasik · 9 Jan 2010 at 12:25

What system spec, motherboard cpu etc. 6Gb with 4Gb usable is an issue in its own right, there should only be a few meg of hardware reserved ram not 2GB!. Some motherboard bios have an option to relocate PCI reserved ram above the physical memory instead of wiping out half ya ram.

If its picking up dual channel on a 3 stick setup on an i7 9xx setup, then perhaps reseating the CPU will sort it out, as the memory controllers on the chip.

manisinghb · 9 Jan 2010 at 14:47

MoBo - Gigabyte EX58-UD5, CPU - i7 920, Windows 7 Ultimate 64bit, GFX Card - ATi 5850

theron · 9 Jan 2010 at 15:20

i think corasiks suggestion of reseating the cpu (or at least the cooler) will help. ive heard of problems where the cpu cooler has been tightened too much and the pressure stops the imc from using all the installed ram.

manisinghb · 9 Jan 2010 at 15:27

theron said:
i think corasiks suggestion of reseating the cpu (or at least the cooler) will help. ive heard of problems where the cpu cooler has been tightened too much and the pressure stops the imc from using all the installed ram.

i am using a watercooling system with a waterblock but maybe this might help, i will give it a go!

sandeep · 9 Jan 2010 at 16:32

Have you run memtest to find any errors?

manisinghb · 9 Jan 2010 at 19:54

whats good memtest?

got a problem now guys, reseated the cpu and reconnected cpu waterblock but now the computer switches off as soon as i power the computer on. when i take the atx pci power connection for the CPU the computer remains powered on but obviously won't boot up. any ideas?

sandeep · 9 Jan 2010 at 19:57

Take the CPU out and check for any broken pins. First thing that came to mind.

And go to http://www.memtest.org/ and burn it to a disc. Boot up with it and let it run overnight.

manisinghb · 9 Jan 2010 at 19:59

sandeep said:
Take the CPU out and check for any broken pins. First thing that came to mind.

done this mate dont seem to be any broke pins

sandeep · 9 Jan 2010 at 20:03

Ermm. What tim did you use. If it's as5 then check around to see if any has gone within the components.

Also check. You may have put too much pressure on the CPU.

manisinghb · 9 Jan 2010 at 20:10

sandeep said:
Ermm. What tim did you use. If it's as5 then check around to see if any has gone within the components.

Also check. You may have put too much pressure on the CPU.

whats a tim sorry? im using a UD5

sandeep · 9 Jan 2010 at 20:11

manisinghb said:
whats a tim sorry? im using a UD5

Tim = thermal insulation material

or thermal paste

as5 is conductive as it's metallic so it can short circuit components

manisinghb · 9 Jan 2010 at 20:23

oh im using mx3 which is non conductive i thinks

sandeep · 9 Jan 2010 at 20:25

Yes it isn't conductive. So you should be ok on that end. Check the pressure your block has on the CPU.

manisinghb · 9 Jan 2010 at 20:26

sandeep said:
Yes it isn't conductive. So you should be ok on that end. Check the pressure your block has on the CPU.

tried many pressures my friend, even tried with the block off, and at the moment the block is probably tightened 3 threads so not tight at all. even done it very tight lol. still no luck though...

sandeep · 9 Jan 2010 at 20:28

manisinghb said:
tried many pressures my friend, even tried with the block off, and at the moment the block is probably tightened 3 threads so not tight at all. even done it very tight lol. still no luck though...

Try with only one stick of ram. If that doesn't work don't think you have another CPU to test in your current rig?

manisinghb · 9 Jan 2010 at 20:31

sandeep said:
Try with only one stick of ram. If that doesn't work don't think you have another CPU to test in your current rig?

no i don't unfortunately, i have a VERY old CPU (from 2003) which i doubt will work

edit: the one stick ram dont help either

Phatzy · 10 Jan 2010 at 04:09

since no one said this.
Have you got memory remap enabled in bios?
Have you unticked memory in advance options in msconfig?