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Windows 7: Upgraded to 4GB Ram 64bit but doesnt work correctly

21 Sep 2010   #11

windows 7 professional x64

Quote   Quote: Originally Posted by 1Bowtie View Post
Did you check before you bought the ram that it was compatible, did it match the ram you already had.
i guess this could help...

Samsung 512Mb 2Rx16 PC2-4200s-444-12-A3


Kingmax DDR2-667 2Gb

My System SpecsSystem Spec
21 Sep 2010   #12

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer

Just to verify, you have installed DDR2 PC2-5300, each stick 2GB.
My System SpecsSystem Spec
21 Sep 2010   #13

windows 7 professional x64

no right now i've installed:

Samsung 512Mb 2Rx16 PC2-4200s-444-12-A3


Kingmax DDR2-667 2Gb

and works with no problem
My System SpecsSystem Spec

21 Sep 2010   #14
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit


The Kingmax web site lists them as singles not a matched set.
I don't know if that would present a problem or not.

According to the spec sheet it should work with the 2x2GB sticks.
My System SpecsSystem Spec
21 Sep 2010   #15

Windows 7 Home Premium 64 bit

I think the reason it's working with the 512 stick, it's running at the slower speed or the original ram, ram is real finicky when using different speed ram than it calls for
My System SpecsSystem Spec
21 Sep 2010   #16

W7 Ulti/64, XP Pro/32

Ram sticks should not be mixed. All ram should be the same manufacturer, same voltage and same timings.
And of course ram should be meant for your mobo. I burned up a mobo's ram slots using two manufacturers.!

When changing ram, you should put in only one stick and enter bios to configure mobo to your ram. Once mobo bios is set you can add the other sticks. Before changing any ram, you should enter bios and put ram bios in default, this will help with POST of the new ram stick.

Flashing the bios to a newer version would automatically reset the bios to defaults.
My System SpecsSystem Spec
22 Sep 2010   #17

win 7 64bit

Quote   Quote: Originally Posted by blancglacier View Post

I have recently upgraded my Dell Latitude D531 from XP 32 bit to Windows 7 Professional 64 bit.

Previously I had 2.5GB of RAM, however having undertaken a crucial scan it said I can now have 4GB of RAM. So, I ordered a new 2GB and replaced the 512MB stick.

Upon booting up for the first time and hit F1 to acknowledge that the RAM has been changed it loaded to the log in screen however I could see loads of white horizontal lines across the screen. I was able to login and the desktop appeared fine.

I then noticed that the audio was coming up saying it cannot be found. It had a red cross through the symbol in the taskbar.

I restarted on numerous occassions to no avail.

I took the new 2GB stick out and put the 512MB back in and all loaded without any problems.

Any ideas?


Manufacturer Dell Inc.
Model Latitude D531
Total amount of system memory 2.50 GB RAM
System type 64-bit operating system
Number of processor cores 2


Display adapter type ATI Radeon X1200 Series
Total available graphics memory 1119 MB
Dedicated graphics memory 160 MB
Dedicated system memory 0 MB
Shared system memory 959 MB
Display adapter driver version 8.561.0.0
Primary monitor resolution 1280x800
DirectX version DirectX 9.0 or better


Network Adapter Broadcom NetXtreme 57xx Gigabit Controller
Network Adapter Dell Wireless 1390 WLAN Mini-Card
both of the rams must be the same to work i have 4gb in 2gb each one the same make and had noprobles at all
My System SpecsSystem Spec
23 Sep 2010   #18

Windows 7 Ultimate x64 and Home Premium x64

A rule of thumb for upgrading or changing memory in any system is not only making sure you have the right RAM for the motherboard you are using, but using the same manufacture, speed and size of RAM. Mixing different manufacturers of RAM or timing or both will introduce too many problems later, ranger from weird system problems, mostly related to memory, to just simply memory not working or showing up properly in the system.
My System SpecsSystem Spec

 Upgraded to 4GB Ram 64bit but doesnt work correctly

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