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Message 1 of 7 (386 Views)

newly installed ram not showing up

I have an hp pavilion m9400t. I recently had 1 gb ram in all 4 slots. Then  the number 1 slot quit working. I removed that one and the 3 slot as I was told to do and the computer ran like crap. I then went ahead and reinstalled the #3 slot ram and it ran fine again. I am upgrading to windows 8 so I bought 3- 2 gb ram sticks. After insalling them it kept showing only 4gb of ram. I tried reseating them and everything and nothing worked. It kept only recognizing 4 gb ram. Then I blew out the inside thinking it was dust and tried again. nothing. Now I reinserted one of the old 1 gb sticks into the 3 slot and tried one in the 1 slot. Funny thing is, Its still showing 4gb ram with the 1 and 3 slot working now. So maybe the 1 slot wasn't working properly due to dust I guess. Maybe. Problem is, only 1 of the 2 gb sticks is registering still in the 2 and 4 slots. Tried pulling 1 out and it doesn't change. I baffled and any suggestions would be greatly appreciated. Oh, by the way, it's running great but I just want to know why I cant get 6 gb ram to show. Thanks.

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Provost
Posts: 12,329
Member Since: ‎11-21-2008
Message 2 of 7 (382 Views)

Re: newly installed ram not showing up

Rick, are you certain that you bought the correct memory?  Here is the memory supported by the motherboard:

 

  • Dual channel memory architecture
  • Four 240-pin DDR2 DIMM sockets
  • Supported DIMM types:
     
  • PC2-5300 (667 MHz)
  • PC2-6400 (800 MHz)
  • Non-ECC memory only, unbuffered
  • Supports 2GB DDR2 DIMMs
  • Supports up to 8 GB on 64 bit PCs
  • Supports up to 4 GB* on 32 bit PCs
*32-bit operating systems cannot address a full 4.0 GB of memory.

 

Also, unless you upgraded to a 64-bit OS, the 32-bit OS will only recognize 3.5 GB of memory.

 

If you don't fill all 4 slots with memory, it is best to use a matching set in either the black or blue slots.

 

Please click "KUDOS" if I have helped you and click "Accept as Solution" if your problem is solved.

 

 

 

 

 

 

 

 

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Tutor
Posts: 16
Member Since: ‎02-05-2013
Message 3 of 7 (376 Views)

Re: newly installed ram not showing up

I definelty bought the correct ram sticks. And I bought my pc as a 64 bit operating system. I'm baffelled. Like I said, I understand that your suppose to have the slots 1 and 3, and 2 and 4 working together. But, thats what I dont get. MIne is recognizing 1 and 3 which have 1 gb sticks in. It's also recognizing either 2 or 4 which have 2gb sticks in. No matter what I do though I can't get it to recognize both 2 and 4 at the same time.

Tutor
Posts: 16
Member Since: ‎02-05-2013
Message 4 of 7 (375 Views)

Re: newly installed ram not showing up

The sticks are 2 gb dd2 dimm.

Provost
Posts: 12,329
Member Since: ‎11-21-2008
Message 5 of 7 (373 Views)

Re: newly installed ram not showing up

The fact that it continues to show 4 GB of memory is what makes me suspicious that you have a 32-bit OS.  Please check in the Control Panel to make certain that it is 64-bit.

 

Also, did you buy three of the same sticks?  Which memory did you buy?  Give me the entire information on it.

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Signature:

HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)

HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51

HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1

HP Photosmart 7520 AIO


++++++++++++++++++
**Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**

Intelligence is God given; Wisdom is the sum of our mistakes!

___________________________
I am not an HP employee.
Tutor
Posts: 16
Member Since: ‎02-05-2013
Message 6 of 7 (368 Views)

Re: newly installed ram not showing up

I am positive it is 64 bit. I've had this pc for 6 years now. I bought PNY @gb DDR2 PC2 6400. Like I said though. It keeps showing at least one working. I understand what you're saying about the 32 bit only allowing 3.5. But, Thats just not the case here. When I had all 3 installed in slots 2,3, and 4, Only 4 gb still showed up. However before I bought these, as I said before, I had 1 gb sticks in slots 2,3, and 4 because I thought the 1 slot was working, and they all showed up as 3 gb total ram. I dont get it either but this is what I need to upgrade to windows 8 for because I am taking some online college courses in the computer field. Thanks Again

Associate Dean
Posts: 5,797
Member Since: ‎09-28-2010
Message 7 of 7 (356 Views)

Re: newly installed ram not showing up

What old_geekster is askling is somewhat simple. Walking into a store and purchasing generic PNY DDR2 is not purchasing modules that are compliant with HP.

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