bios detected 4GB RAM but Win7 wont load

Lenovo G460 laptop computer - 06779uu...
March 7, 2011 at 04:23:37
Specs: Windows 7 ultimate N, intel core 2 deo
hi Every body,
I have ram of 2X2 gb. If i place any one of them in the any one of the slot my system is working properly. If i place both of them together the bios detected 4gb ram but windows 7 ultimate N is unable to boot.

See More: bios detected 4GB RAM but Win7 wont load

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#1
March 7, 2011 at 05:22:43
Prepare a RAM test cd and boot to it. Do a complete RAM test for about 4 hours or more.

For this purpose, visit this site. Download an .iso copy and burn it to a bootable cd.

CoolGuy


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#2
March 7, 2011 at 13:44:44
Your windows 7 dvd has a memory diagnostic if you can get the dvd to boot up to repair tools.

"The era of big government is over," said Clinton 1996


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#3
March 8, 2011 at 00:21:04
Hi thank you for replay. I tryed with booting with windows 7 dvd. but no use. it faild to boot with 4 gb ram.

yagna narayana


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Related Solutions

#4
March 8, 2011 at 09:16:39
Take out one stick of ram, you said it would boot that way and then run diagnostics
Some HELP in posting on Computing.net plus free progs and instructions Cheers

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#5
March 8, 2011 at 19:50:35
It sounds like a motherboard problem, unless your memory is not fully supported by the motherboard, then it may only tolerate one stick.

You have to be a little bit crazy to keep you from going insane.


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#6
March 9, 2011 at 00:11:42
Some RAM sticks may need D.O.C.P. and/or XMP mode enabled in BIOS for proper operation. Just check MB manual.

CoolGuy


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#7
March 10, 2011 at 17:14:07
hi suatcini,

can you please tell me how to enable D.O.C.P and/or XMP mode in BIOS?


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#8
March 11, 2011 at 04:46:24
This all depends on your motherboard. You must read the manual. Ex. my motherboard is from Asus and the BIOS has a section called Ai Tweaker Menu. In this menu I can set Ai Overclock Tuner on Auto, manual, D.O.C.P. and X.M.P.

D.O.C.P. (DRAM OverClock Profile) and X.M.P.(eXtreme Mode Profile) modes are related to the RAM stick specifications and these modes activate new RAM profiles, voltages, timings, etc. for them to work properly.

CoolGuy


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#9
March 11, 2011 at 06:15:25
I have a Gigabyte board that had the option only when the memory installed supported it, when I had problems with that set and replaced it, the other barbs RAM did not support it and there was no option available for it even though it was spec'd out for optional/advanced settings. I set the optional settings manually for that set. Read the information on your memory for these settings as well as your MB manual if you do not have the option.

You have to be a little bit crazy to keep you from going insane.


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#10
March 11, 2011 at 06:27:44
it might help to see the specs of your board and memory...do you have 4 memory slots, of different colours, red and yellow for instance, if so you must put your sticks in the slots of the same colour.

i hate computers!
but cant help myself....


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#11
March 19, 2011 at 10:14:25
i am sorry it was not helped me

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#12
March 19, 2011 at 17:25:11
Sorry, since you have not reported individually what you tried and what the results were, we have not been able to give you further advice.
Your motherboard probably needs to have exactly matched sticks of memory when you are running 2 sticks since it is trying to run in dual channel mode, but is not able to, but it may be fine with either stick alone since it is running in single channel mode. Your BIOS may not care as much while you are in your set up screen since it is made more tolerant so you can enter to correct settings, but the problem occurs when going into full operation (regardless of operating system).
Did you run Memtest? I believe I remember that it will tell you if you are running in dual channel mode.
Drop an email to factory tech with EXACT spec's on each memory stick and see if they agree that they cannot be mixed.

You have to be a little bit crazy to keep you from going insane.


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