memtest86 severe errors

April 11, 2009 at 15:05:14
Specs: Windows Vista
I have severe errors in memtest86:

I am running 3gb of ram on asus deluxe mb.

i have tested all three sticks of ram, individually using memtest86 and all of them report errors on test 6, no matter what slot they're in.

We're not talking two or three eroors, we're talking thousands of errors.

This system suffers from constant BSOD and system freezes.

Can anyone help solve this please?

See More: memtest86 severe errors

Report •

April 11, 2009 at 15:14:44
Is this a new build? Perhaps the RAM is not fully compatible with your motherboard. If custom built you might check the motherboard website for a Qualified RAM vendor list.

Try removing and installing the RAM sticks 5 or 6 times each to burnish the contacts. If still receiving errors RMA the RAM. Maybe a power surge or something else has damaged them.

Report •

April 11, 2009 at 16:30:13
Sure sounds like bad RAM. Unfortunately, you didn't bother to list the make/model...same goes for the motherboard.

Make sure to manually configure the RAM settings in the BIOS...speed, timings & voltage. Do NOT simply run AUTO settings.

Report •

April 11, 2009 at 16:51:17
MoBo is Asus A8N32-SLI DELUXE
RAM is 3x1GB DDR-1 DELTA (says 94v on back of them) all three same make and model.

It's not a new build, built a year ago though rarely used until now... always had problems with BSOD just that this is the first we've had time to read about the cause and actually investigate it.

Been looking in BIOS and can't see how or what to set the RAM voltages too? Any help would be hugely appreciated.

Report •

Related Solutions

April 11, 2009 at 17:19:41
I see settings in BIOS for these:

MemClock Mode:
Memclock Value:
MCT Training Mode:
CAS Latency (CL):
MCT Extra Timing Mode
R/W Queuw Bypass Count
Bypass Max
Idle Cycle Limit
Dynamic Idle Cycle Centre
DDR Driving Strength
User Config Mode
Read Preamble
Asyc Latency
Burst Length
Hardware Memory Hole........

I have no idea what to set al this to. How can I determine what settings to use please?

If I were to buy Kingston Ram KVR400X64C3A/1G recommended in the mobo manual, would this cure the problems?

Report •

April 11, 2009 at 21:54:24
It should. So far I've had good success with Kingston.

WinSimple Software

Report •

April 12, 2009 at 07:01:32
Well, I ordered a couple of sticks of the Kingston RAM
recommended in the Mobo manual so it'll be here in
Wednesday after the Easter holidays. Hopefully that'll solve
the problem and if these two sticks test out ok with Memtest
then I'll go buy another two.

I can't see how all three sticks of existing RAM are faulty
though. I guess they're just not compatible with the MoBo??

Report •

April 12, 2009 at 09:35:01
I don't know why you'd be running 3 sticks on a board that supports dual channel.

As for the BIOS settings, they should be configured to the RAM specs. There's *usually* a label that has the timings & voltage. For instance, 3-4-4-8 at 2.5v. If the info not on the label, try the manufacturer's website.

And just because the RAM isn't on the supported list doesn't mean it's not compatible. A motherboard manufacturer can't possibly test every single brand of memory on the market. Kingston doesn't manufacture memory chips anyway, they assemble memory modules. The chips they use come from a variety of different manufacturers....Samsung, Infineon, Micron, etc.

Report •

April 15, 2009 at 02:13:17
Well, my new Kingston RAM arrived this morning, the exact
same model number as recommended on the mobo manual.
It's not good news though!

Plugged in the two new sticks to the two brown slots and
booted up in Memtest86 v.211 mode.

As usual, Test #6 returns 800 or so red errors and test #7 returns another 400... I usually switch off before test #8 but I've noticed it's stuck at test #7 Test 3% Pass 64% and wont budge further.

My BIOS settings are defaulted as well.

Anyone have any idea what can be causing this? My PC
crashes sometimes 15 times a day :-(

Report •

April 15, 2009 at 02:33:24



HELP?!!?!?!!??!?!?!?!? aarrrgggg

Report •

April 15, 2009 at 05:47:05
The Kingston RAM is meant to run at 2.6V which is not default voltage for DDR RAM. 2.5V is the default. Your BIOS may or may not adjust that voltage.

Also, the Kingston RAM is 4 bank modules. That could be an issue. The memory controllers on your motherboard may not be designed to use that many banks. I will check your motherboard specs but there may be nothing listed.

I suggest you go to and run their online scan to find out what RAM is compatible. Then look up the module number on that site and see all the specs.

Report •

April 15, 2009 at 06:14:22
Hi, thanks for the reply. When you say 4 bank modules, what do you mean exactly? I have them installed in both brown banks as a pair. The RAM I purchased was recommended in the mobo manual.

The areas I'm having difficulty with are what to set "MemClock Mode" "Memclock Value" "MCT Training Mode" "CAS Latency (CL)" "TRAS" "TRP" "TRCD" "TRRD" "TRC" "TRFC" "TRWT" "MCT Extra Timing Mode" "TREF" "TWCL" "R/W Queue Bypass Count" "Bypass Max" "Idle Cycle Limit" "Dynamic Idle Cycle Centre" "DDR Driving Strength" "User Config Mode" "Read Preamble" "Asyc Latency" "Burst Length" "Hardware Memory Hole"....... to?

The only one of these mentioned in datasheet is TRFC and datasheet says 70ns (min) whereas BIOS doesn't have this setting, it has 9T to 23T

Help me please??

Report •

April 15, 2009 at 07:25:35
OK, I have done some research on your board and RAM.

The Kingston RAM should be OK but you can ONLY run 2 sticks. The correct slots are listed below.

Let me say that your Asus board is considered an enthusiasts board. As such, you need to learn how and what to tweak in the BIOS settings. If you read the manual carefully you should find most of what you need to know.

Look at all the links below. Especially the ones concerning your motherboard. Your when populating the RAM slots you want to run matched pairs. Asus recommends running LESS than 3GB of total RAM. As I already stated you can run 3 sticks of DDR 400 as the controller can't support it. You could clock it down to 333 but there is no advantage. Send one stick back, if you can.

Read the memory section of the manual and install only ONE stick of RAM at first in the slot specified in the manual. Set the RAM voltage and timings manually to Kingston specs. Test with memtest86 to see if there are any problems.

If you still get errors then either something is wrong with the CPU or CPU settings or your motherboard may be defective.

If you read in the system specs section of the Kingston information it clearly states that when using DDR400 you can only use 2 1GB modules.

The excerpt below is from your manual.
When using two DDR DIMM modules, install into DIMM_A1 and
DIMM_B1 slots only.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules
from the same vendor. Refer to the memory Qualified Vendors List
on the next page for details.
• Due to CPU limitation, DIMM modules with 128 Mb memory chips or
double-sided x16 memory chips are not supported in this motherboard.

Below is a link to your manual.

Below is a link to all the down loads for your board.

Report •

April 15, 2009 at 10:46:48
Thank you, you're being very, very helpful as I'd lost the mobo manual when we moved house recently.

From what I read in the .pdf manual you sent, there are conflicting statements. As you said above, "when using DDR400 you can only use 2 1GB modules" versus the excerpt beneath the compatibility tables on 2-13, "DIMM support:
A - Supports one module inserted into either slot, in Single-channel memory configuration.
B - Supports one pair of modules inserted into either the blue slots or the black slots as
one pair of Dual-channel memory configuration.
C - Supports two pairs of modules inserted into the blue and black"

I'm confused as the RAM I purchased is ticked under columns A, B plus C which sort of reads to me, that I can have 4nr. 1GB sticks?

You say to, "set the RAM voltage and timings manually to Kingston specs" but I cannot find these specs anywhere and I don't know which part of the BIOS menus to change, even if I did? I've set CAS Latency [CL] to 2.5 though, and rebooted the system to Windows (Vista 32 btw.) for the first time since installing the new Kingston RAM. So far, it's not crashed once. I have the RAM in DIMM A2 and B2, I know they should be in A1 and B1 but wanted to keep them as far from the CPU heat as possible.

I'll keep using this PC to see if it's going to crash as usual. It rarely goes a day without crashing and when it crashes it can crash 15-20 times in a row before becoming stable again. I have my memtest bootdisk in the drive in case it shuts down in the middle of the night.

Do you think flashing the BIOS might help? I am on version 1006 and I see it's up to version 1410 or so?

Report •

April 15, 2009 at 11:25:50
You are not reading the manual correctly. When using 4 Modules you need to use DDR333 RAM. You could manually set DDR400 to run at DDR333. However, in order to take advantage of the dual channel mode you must run the same RAM in both channels. You cant accomplish that with 3 sticks of equal capacity.

As far as the specs for your RAM go, you posted a link to the specs. The main thing is the Voltage setting of 2.6 and the CL setting of 3. The other settings can be set conservatively. That means set to higher number, which is slower.

I don't think a BIOS update will help. However, what you can do is read what the reason for the updates were. If any of them involved memory then it may be a good idea to do that. Flashing the BIOS is serious stuff. Clicking on each BIOS update file on the Asus site will show you what the update is supposed to fix. Each update is cumulative, that means you don't need to flash each in order. Just the latest will give all the features.

Report •

April 15, 2009 at 11:36:48
I took out the 3 sticks of RAM I had before as they were unbranded. I'm now using 2 stick of Kingston Ram in DIMM A2 and B2. The three stick I had in the machine before are not being used. If I can stabilise the system using the 2 new Kingston sticks then I'd like to upgrade with another 2 to give 4GB total...

Are you saying this isn't possible with this Kingston RAM and mobo?

I read the BIOS update threads to see if they apply to memory... there are a few references to memory:

Version 1303

Description A8N32-SLI Deluxe BIOS version 1303
1- Improve the compatibility with some external SATA storage HDD.
2- Change Asus logo.

Version 1205

Description A8N32-SLI Deluxe Bios version 1205
1- Enhance PCI / PCIE compatibility
2- Support 7900 Series VGA cards
3- Enhance SATA RAID compatibility

Version 1103

Description A8N32-SLI Deluxe Bios version 1103
1- Support VCT Function for both LAN.
2- Show pink and red color when oversetting Dram voltage.
3- Fixed System show wrong Memory Installed Size when Enable Memory Hole Function.
4- Update AI Booster Code to improve overclocking ability.

Version 1009

Description A8N32-SLI Deluxe Bios version 1009
1. Fixed System MAC/UUID will sometimes lose when AC Power lost
2. Add AI tuner Option under AI Booster to set Auto or Standard
3. Support changing SATA/RAID mode individually in the Bios
4. Add new memory frequency of 216,233 or 250 MHz no matter memory SPD is(E series support only)
5. Hidden ECC DRAM Support option when DRAM Doesn't support ECC function
6. change OnBoard GLAN1 option "Auto" to "Enable"
7. Adjust PowerManagement Default/power on option
8. Show PowerManagement option at APM option

Do you think I should flash the BIOS based on above? If not for the memory then I do have a 7900 VGA card installed (NVIDIA GeForce 7900 GTX)?

Maybe this minidump file would help you diagnose the crashing issue?

Report •

April 15, 2009 at 11:56:33
I don't see anything in the descriptions of the BIOS updates that would help you. If you need explanations of why I could provide them but suffice to say they won't help.

I guess you are not understanding the issue with 4 - 1GB sticks of RAM. You can run 4 sticks of DDR333. You can't run 4 sticks of DDR400. Theoretically your BIOS should automatically downgrade the clock speed to 333 when installing DDR400 but that may not be happening.

I didn't go back to the manual to look but I think the manual recommends using the #1 slots first. If you can get the RAM to run stable when setting up manually then after a few days you could try installing the third stick and setting the RAM to run at 333 (166). Hope that makes some sense to you? If you can get the three stick to run stable at 333 then you could get a 4th stick.

However, if you read all the links I provided Asus recommends keeping the RAM capacity BELOW 3GB total. I don't understand why you feel you need 4GB of RAM.

Most times that is over kill.

Going back to your stability issues I stated above that you have an enthusiast board. That means it requires more tweaking to get it to run both fast and stable. The default settings may be too aggressive. You also need to go through ALL the settings. The RAM may be only part of your problem.

Report •

April 15, 2009 at 12:22:47
Point taken on the enthusiast board..... but getting back to the 1200 errors in Memtest..... It can't be all five sticks that are faulty, it has to be BIOS settings right?

What would you change firstly to re-test in Memtest and get rid of these errors as I feel those will probably be the root cause of system instability.

There are some settings in BIOS that I simply don't understand and I've tried messing with them. Sometimes the system wont even boot and I have to remove the CMOS battery to reset BIOS in order for it to boot at all. I don't like messing with the BIOS settings as I don't know what I'm doing in there....

What settings would you change first off?

If 4GB is overkill then why is my system often sluggish? I do use a lot of intensive software packages, all open at once. Example, I have Photoshop CS4, Bridge CS4, Frontpage, Dreamweaver, Excel, SmartFTP, Several IE7 windows, Several FF5 windows, 9 Local Browser windows, all opened at the same time and all working fairly hard.

With 2GB the system seems sluggish... Surely 4GB would improve this? If not then what would you recommend to improve sluggish performance.... I do keep system clean and regularly defrag, disk cleanup, registry cleanup etc., etc....

Report •

April 15, 2009 at 13:15:45
I explained how to test the system in #16.

Why do you need ALL those programs open at once?

What are you doing for graphics. Some add in graphics cards can still use system RAM. You should check that. Right click on My Computer and choose properties. Under the General tab it will state how much RAM is available. If it is less than whatever the modules add up to with one or two installed then graphics may be using system RAM as well as on card RAM.

Report •

April 15, 2009 at 13:43:06
I am building a website which requires all of these programms opened at the same time.... Bridge and Photoshop working hand in hand to batch images (put logos on them and optimise them for web)... web browsers open to test pages for cross browser compatibility..... FTP open for uploading images.... Frontpage as a template editor..... Dreamweaver to modify my php files..... Excel as a stock database....

System does get sluggish when working full steam ahead.... that's why 4GB might be better?

My graphics card is a NVIDIA GeForce 7900 GTX which has 512mb RAMDAC.... at least I'm sure it's not the 1GB version but can't seem to figure that out from Everest or System Properties...

Right click Computer in Vista doesn't give a general tab :-)

Report •

Ask Question