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Not Recognizing All Memory
03-12-2013, 09:26 PM,
#1
Not Recognizing All Memory
This has been a persistent problem, but I am determined to get to the bottom of it. I have 16 gig of RAM installed, and Windows "sees" it, but I can't use it.

Here are screen shots from CPU-Z

[Image: p1475886344.png]

[Image: p1475886376.png]

[Image: p1475886378.png]

[Image: p1475886394.png]

[Image: p1475886420.png]

I've checked each stick individually, looked all through the BIOS. Googled it... no luck.

Any ideas?
Intel Core i7-870 Lynnfield 2.93GHz O/C to 4.20GHz ~ ASUS P7P55D-E Pro MoBo ~ G.SKILL Sniper 16GB (4 x 4GB) ~ CM HAF 922 Case ~ 2X Radeon HD 6850 1GB in Crossfire ~ Sandisk 256GB SATA 3.0 SSD ~ Sandisk 120GB SATA 3.0 SSD ~ A-DATA 64GB SATA II SSD ~ 2X Western Digital 3 TB ~ 2X Samsung 1 TB Spinpoint ~ Corsair 750W Power Supply ~ CM Hyper 212 Plus CPU Cooler ~ 2x Acer H243H 24" 2ms 24" LCD >>>> 7.7 Windows Score <<<< Highest Stable O/C Score
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03-13-2013, 11:15 AM,
#2
RE: Not Recognizing All Memory
you only show screenshot for slot 1, are all the sticks the same brand, speed and latency?

look in msconfig, under boot tab and advanced, to make sure max mem is unchecked.

next, i would reslot every one of those dimms cause that board is real finiky about ram seating.
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03-13-2013, 01:26 PM,
#3
RE: Not Recognizing All Memory
All sticks are identical, max mem is unchecked, and I've tested them each individually, re-seated them, tried them in all other slots, etc...
Intel Core i7-870 Lynnfield 2.93GHz O/C to 4.20GHz ~ ASUS P7P55D-E Pro MoBo ~ G.SKILL Sniper 16GB (4 x 4GB) ~ CM HAF 922 Case ~ 2X Radeon HD 6850 1GB in Crossfire ~ Sandisk 256GB SATA 3.0 SSD ~ Sandisk 120GB SATA 3.0 SSD ~ A-DATA 64GB SATA II SSD ~ 2X Western Digital 3 TB ~ 2X Samsung 1 TB Spinpoint ~ Corsair 750W Power Supply ~ CM Hyper 212 Plus CPU Cooler ~ 2x Acer H243H 24" 2ms 24" LCD >>>> 7.7 Windows Score <<<< Highest Stable O/C Score
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03-13-2013, 03:56 PM,
#4
RE: Not Recognizing All Memory
The interesting thing that I see in the third screenshot is that the memory is running in single channel, instead of dual channel.

If you've tried all the sticks individually, re-seated and all, the most likely cause is a defective motherboard.
Laptop: MSI GS30 Shadow-045 Dimensions: 12.6" x 8.9" x 0.8" 2.65lbs CPU: Intel Core i7-4870HQ Quad-Core + Hyper-Threading OC 2.5-3.9GHz RAM: 16GB DDR3 1600MHz Video Card: Intel Iris Pro 5200 Storage: 2x128GB SDD RAID0 Audio: ASUS Xonar U3 USB Sound Card + Audio-Technica ATH-M50 headphones Screen: 13.3" - 1920 x 1080 IPS + 27" Dell P2715Q IPS 3840 x 2160 Keyboard: Filco Majestouch MX Cherry Blue Mouse: Logitech MX518
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03-13-2013, 04:35 PM,
#5
RE: Not Recognizing All Memory
yes i noticed that too, which is to try to reseat them again. sometime ive had to reseat sticks more than once to get them seated properly. after making sure they are all reseated i would even clear CMOS and restart to see what it does.

another thing you can look at is in bios and see if it recognizes only 8 gig and look for a memory mapping option to enable re-mapping.

about the only other thing i can think of off the top of my head is maybe check the bios build and see if asus had memory problems with the current loaded build on your machine. ive heard similiar problems with IB boards not recognizing dual channel functionality because of a light seated CPU.

good luck
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03-14-2013, 07:00 AM,
#6
RE: Not Recognizing All Memory
I see it's already been said before but I agree with Pwnbroker and MB on the single channel issue.

If you have all sticks recognized and can only use half of the ram in Single Channel mode. I'd say the dual channel is broken and not the ram sticks. If you changed out the ram modules many times you could have damaged the mobo. A small piece of solder not working is not hard to fathom.

Did you flash the BIOS or software upgrades before you noticed this deficiency?
Case: Cooler Master HAF XB. CPU: Intel i5 4670k @ 4,4gHz. Mobo: Asrock Z87 Extreme4. PSU: Corsair RM1000i. GPU: ASUS Strix 980ti. RAM: G.Skill TridentX 2400mHz C10 2x8gb. SSD: Samsung 840 Evo 256gb. OS: Win7. HDD: WD Digital Red 2tb. More! I need more!
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03-14-2013, 11:53 AM,
#7
RE: Not Recognizing All Memory
No. It's been like this from the get-go, but it hasn't really been a pressing issue. Lately, though, I've been jumping into applications from Lightroom, and doing a lot more photo processing, so I wanted to get it figured out. Ugh.
Intel Core i7-870 Lynnfield 2.93GHz O/C to 4.20GHz ~ ASUS P7P55D-E Pro MoBo ~ G.SKILL Sniper 16GB (4 x 4GB) ~ CM HAF 922 Case ~ 2X Radeon HD 6850 1GB in Crossfire ~ Sandisk 256GB SATA 3.0 SSD ~ Sandisk 120GB SATA 3.0 SSD ~ A-DATA 64GB SATA II SSD ~ 2X Western Digital 3 TB ~ 2X Samsung 1 TB Spinpoint ~ Corsair 750W Power Supply ~ CM Hyper 212 Plus CPU Cooler ~ 2x Acer H243H 24" 2ms 24" LCD >>>> 7.7 Windows Score <<<< Highest Stable O/C Score
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03-14-2013, 02:38 PM,
#8
RE: Not Recognizing All Memory
Finally got it. I took out all of my memory, and put it back in newest to oldest (by serial number) in the slots. That didn't work. Tried oldest to newest, and it works. WTF? Sheesh! Thanks for trying everybody Smile
Intel Core i7-870 Lynnfield 2.93GHz O/C to 4.20GHz ~ ASUS P7P55D-E Pro MoBo ~ G.SKILL Sniper 16GB (4 x 4GB) ~ CM HAF 922 Case ~ 2X Radeon HD 6850 1GB in Crossfire ~ Sandisk 256GB SATA 3.0 SSD ~ Sandisk 120GB SATA 3.0 SSD ~ A-DATA 64GB SATA II SSD ~ 2X Western Digital 3 TB ~ 2X Samsung 1 TB Spinpoint ~ Corsair 750W Power Supply ~ CM Hyper 212 Plus CPU Cooler ~ 2x Acer H243H 24" 2ms 24" LCD >>>> 7.7 Windows Score <<<< Highest Stable O/C Score
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