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Upgrading from 4GB RAM tp 8GB Problems

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March 31, 2013 12:18:34 AM

I have recently upgraded my RAM from 2 X sticks of 2GB to 2 x sticks of Corsair 4GB.
I am running W7 Home Premium.
When i fit both sticks, W7 will not start, but with one stick of the new RAM it will.
I have checked i have the RAM in the right slots.
Could it be the new RAM is 1600mhz and the old is 1333mhz?
I can also get W7 to start with 1 stick of new 4GB and 1 stick of the old memory = 6GB total.
I tested with 1 stick of new memory $GB plus 2 sticks of old 2GB = 8GB and W7 will not start.
So i am drawing a conclusion that my W7 just does not like above 6GB.
My Motherbard supports 16GB max over 4 slots (4GB per slot).
Any thoughts ?

Regards

Simon

More about : upgrading 4gb ram 8gb problems

a b } Memory
March 31, 2013 12:27:51 AM

mixing ram is generally a bad idea. your 1600 will lower to 1333 speeds....if it works at all. if you insist you need to make sure mixed memory mode is on and your motherhood is capable of such.

if were you i would only use the new ram.
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a b } Memory
March 31, 2013 1:27:05 AM

You could try manually setting the ram specs. Pick the lowest common denominator for the ram sticks and set it in the bios. See if all will work that way.
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March 31, 2013 2:43:47 AM

Thanks to the swift replies,just to be clear, my new RAM both Corsair 4GB 1600mhz will not allow pc to book. If i take one outi.e. 4GB left the pc starts fine.

If i add another 2gb RAM 1333mhz it runs and start fine.

If i add another 2gb RAM 1333mhz the pc does not start.

It seems 8GB is the threshold that the pc gives up.

How do i set the RAM in BIOS ??

Oh and in safe mode it boots up and does show 8GB RAM in PC.

Regards

Simon
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a b } Memory
March 31, 2013 3:02:05 AM

Try to clear the cmos with the jumper on the mobo.
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March 31, 2013 3:24:42 AM

Clear the CMOS with the jumpers and still nothing.

Thanks for suggestion.
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March 31, 2013 3:46:13 AM

Update this morning;
I disabled memory remapping in BIOS settings, the PC booted...hoorah.
But on 3.33GB RAM out of 8GB RAM useable.
I then went back into BIOS and enabled memory remapping.
PC Booted.
Still only 3.33GB available.

Went into MSCONFIG and ticked MAX RAM box.
Rebooted.....
PC starts again, and now i have 7.24GB RAM available.
So how do i get that final bit of my 8GB RAM to be available ?
I have not seen any of what i have done on the web so thought i would post my trials so others.
Regards

Simon
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a b } Memory
March 31, 2013 4:06:38 AM

You have an IGP instead of GPU?
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March 31, 2013 6:41:34 AM

No i am running a GTS 450 Card.
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a b } Memory
March 31, 2013 6:45:29 AM

you running windows 32 bit aren't you? it is not capable of seeing greater then 4gb of memory (including video memory thus the 3.33 available). memory remapping is a trick some motherboards have to get around the 4gb thereshold but it is a trick and not all programs will be able to use it properly. it is also what is cause you issues (or at least a lot of them) you need windows 64 bit to utilize all your ram properly.
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March 31, 2013 8:32:47 AM

No i have Windows 7 Home Premium 64 Bit Operating System.

Despite my previous post, although the pc now reads 7.25GB of RAM , its unstable and crashes to blue screen when any programmes are opened.

Looks like my 2 new sticks of 1600mhz RAM will be on ebay tonight.

I can only think this is the problem , the RAM speed @ 1600mhz. My motherboard says max 1333mhz. My error, but from other posts i thought the 1600mhz would work but the pc would down it to 1333mhz.

Regards

Simon
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a b } Memory
March 31, 2013 8:37:21 AM

you should still be able to down clock it to 1333mhz speeds i would think. what voltage is it set for when you down clock it? also what motherboard do you have?
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March 31, 2013 8:47:46 AM

Hi there,

I am not a pc expert, far from it and do not know what clocking is or the volts you make reference to.

However i learn fast, so your thoughts would be appreciated.

I am running a Foxcomm P55A motherboard.

regards


Simon
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a b } Memory
March 31, 2013 8:56:02 AM

it should be listed on the sticks of ram otherwise down load cpuz....
http://www.cpuid.com/downloads/cpu-z/1.63-setup-en.exe

then go to the memory tab and see what voltages it recommend for your ram....moral of the story your ram must be 1.5v or less or it will damage you cpu and is out of spec with your motherboard
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March 31, 2013 10:55:44 AM

CPU-Z shows under the SPD section Slot 1 as 1.5V on all 4 timmings.

Am i reading this right ?
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April 1, 2013 5:34:01 AM

Aybody have any final thoughts re my problems ?

I may try the same RAM but at 1333mhz to see if that is the issue.

Regards

Simon
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a b } Memory
April 1, 2013 5:40:07 AM

thanks yes you read that right and the values are good....i would try the same ram at 1333 to see if that works...let me know
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a b } Memory
April 1, 2013 6:04:15 PM

Run Memtest on the new sticks. Perhaps they are bad and need to be returned.
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a b } Memory
April 1, 2013 7:44:34 PM

How do you figure? The 1600 should downclock just fine to 1333 speeds. (or manually do it like I suggested.)
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April 1, 2013 7:57:01 PM

4745454b said:
How do you figure? The 1600 should downclock just fine to 1333 speeds. (or manually do it like I suggested.)


I am addressing the original problem by using the manufacturer web site for his MOBO.

Yes you can manipulate the RAM to lower the speed that I am not contesting, I am just pointing out the original problem. That is why we are suppost to read the instructions.
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a b } Memory
April 1, 2013 10:15:25 PM

Then I'm totally missing the point you were trying to make. The only "error" I saw in your post was that his board only supporting 1333/1066. What did I miss? (By "error" I'm not saying you were wrong. I'm saying you were pointing out an error.)
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April 2, 2013 1:11:06 PM

All,

I gave up trying to get the Corsair to boot, i even tried updating my AMI BIOS but i could not figure that out eirther.

So its now down th PC show for them to figure it out......but they didnt sound confident either !

Thanks to all your suggestions, really appreciated.

I like to try and fix things myself, but this one beat me !

Regards

Simon
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April 5, 2013 10:11:18 AM

Final post from me on this one.

Really annoying.....

I could not get the update of the BIOS to work and it was bit over my head so I took it to a local PC shop to sort the problem.

They told me it needed a reload of windows, so after 3 hours labour and a £115 bill my windows was reloaded and I was told that all should be okay.

Got home started reloading games and blue screen of death again !

I have now taken the Corsair RAM out and put the old RAM back in and everything runs okay.

My question is, the retailer I purchased this ram from was Maplin and they will not refund or exchange hardware.

So now I figure my only option is to see if Corsair will exchange for me for the 1333mhz version of the same RAM.

Does anybody know if this is possible and is there a UK address to deal with ?

Regards

Simon
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a b } Memory
April 5, 2013 7:29:36 PM

I hope you can get money back from shop. Reloading software doesn't fix hardware problems. Not sure I'd use them again.

They have contact us and customer service links on their homepage . I'd start there. http://www.corsair.com/us/
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April 13, 2013 4:44:29 AM

I am back again determined to get this RAM issue resolved.



I have now obtained an identical set of 2GB RAM (2 X 2GB) that match the RAM I had in my PC when I purchased it (I know I cannot guarantee exact match if I do not buy as a pair).



So now I have 4 banks of 2GB RAM all 1333mhz and all same manufacturer and part number.



Tested with 6GB all okay and PC runs fine.



Tested with 8GB and blue screen of death again when I load a gam, although pc does recognise the full 8GB now.



This is identical to the issue I had with the Corsair RAM, crashing anything over 6GB.



So im going to get the BIOS updated despite my local PC shop declaring WW3 will break out if I do this.



I have contacted my motherboard manufacturer Foxconn and I have the update I need.



I have the ME jumpers on 2-3 pin and I ran the BIN file as follows



fpt - f ****** (I inserted my bios number to update).rom -y



I got an error in red saying "protected range register"



Anybody have any ideas what this means.



Im getting closer to flashing this BIOS.



Regards

Simon
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a b } Memory
April 13, 2013 6:36:07 AM

Do you move the jumper to 2-3 to flash? I thought that was only to reset it. Try flashing bios with jumper in normal mode (1-2) and see if its still protected.
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a b } Memory
April 13, 2013 9:13:54 AM

sorry i have been sick. as for all the errors your getting i am clueless. If your able to flash the bios i would. it may not help but at this point it doesn't sound like it couldn't hurt (beyond the obvious bricking risks).
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April 13, 2013 9:29:52 AM

All,

Update, I got the BIOS updated, now to see if the RAM works.

My CPU fan is now flat out after the BIOS update. Any reason why it would run flat out now ?

Regards

Simon
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a b } Memory
April 13, 2013 9:31:46 AM

bios update switched a fan setting is all. probably set to 100% or close. check your hardware manager and see if you can slow it down.
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