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Ram installation problem


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#1 magnus3142

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Posted 17 March 2014 - 10:25 AM

Hello,

I have an old HP laptop with Windows 7 on it. It has 2 slots of DDR3 RAM. Today i have tried to add 2 gb ram to 4 gb of ram from the factory, so i could have 6gbs. After i did it i run my computer, went to task manager and saw that 3.1gbs are reserved for windows. Before i had only 1.1gb reserved. Which means those extra 2gb are being used by windows. Can someone explain me what is the problem? Why windows system took 2gb of extra RAM i have put. Waitign for answers, Thank u!

 



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#2 JohnC_21

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Posted 17 March 2014 - 10:41 AM

Hello, and welcome to Bleeping Computer

 

You probably have the 32bit version of Windows 7. The 32bit version can only recognize 4MB max with other memory being used for graphics and the system BIOS. To use more than 4GB you need the 64bit version of Windows 7.

 

http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx#physical_memory_limits_windows_7



#3 magnus3142

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Posted 17 March 2014 - 10:48 AM

I removed factory card with 4 GBs and running this time on 2 GB card. System reserved 1,1 GB same when i run on 4GB card. Why does system reserve extra 2GB (3.1 GB total) when i have 2 cards 2gb and 4gb? Why does it reserve only 1.1gb when i run them single 2 or 4

http://h18004.www1.hp.com/products/quickspecs/13948_div/13948_div.PDF. In this manual i found out that laptops RAM can be maximized to 8 GB. Am i wrong? Yes im running 32 windows 7 system. If what u say is true what can i do then? 



#4 JohnC_21

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Posted 17 March 2014 - 11:27 AM

I now understand your question but I do not know why the memory seen on the single card is 1.1GB but 3.1 on both cards. It should still see 3.1GB when using only the 4GB card, not 1.1GB. Maybe somebody on the board can answer this. When you used the 4GB card that showed 1.1GB, was this shown in BIOS and Windows?

 

But, the only way to can get more than 4GB seen by your 32bit OS is to upgrade to a 64bit OS.

 

I will be leaving the board for awhile. Maybe somebody else can jump in here.

 

Edit: I will have to look at the manual of your computer.


Edited by JohnC_21, 17 March 2014 - 11:28 AM.


#5 magnus3142

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Posted 17 March 2014 - 11:50 AM

This what i get now, but ofc you are right about 32bit system cant run over 4 gb of ram? But can i do anything else than install a 64 system? I have tried this patch  but after i choose it on laptop start it doesnt want to boot windows... and i got only black screen.

So is there any other way?

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#6 JohnC_21

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Posted 17 March 2014 - 01:51 PM

Sorry, other than the patch you tried to install, which did not work for you, I know of no way other than using a 64bit OS.

 

Maybe somebody else on the board knows of a way and will post their experience here. I know it is a waste of 2GB but using both modules (4GB & 2 GB) which gave you 4GB is very good on the 32bit OS.

 

Edit: I read the specifications of your computer and it supports dual-channel memory. Your best performance would be to install both slots with identical modules. 2 x 2GB or 2 x 4GB


Edited by JohnC_21, 17 March 2014 - 02:42 PM.


#7 magnus3142

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Posted 17 March 2014 - 06:08 PM

Sorry, other than the patch you tried to install, which did not work for you, I know of no way other than using a 64bit OS.

 

Maybe somebody else on the board knows of a way and will post their experience here. I know it is a waste of 2GB but using both modules (4GB & 2 GB) which gave you 4GB is very good on the 32bit OS.

 

Edit: I read the specifications of your computer and it supports dual-channel memory. Your best performance would be to install both slots with identical modules. 2 x 2GB or 2 x 4GB

Thanks for your respond. Now i know how does 32 bit system works... 






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