For all features requests or Bug fixes for Memtest86+ (www.memtest.org). NO HELP FOR HARDWARE ISSUE !
Update : Official Memtest86+ USB Installer released
Select Download - Auto-installer for USB Key from this link
Run boot Memtest86+ from USB flash drive
Useful for Notebook they don't have DVD drive to boot.
Backup USB flash drive before run installer
After More than 2 years since 4.20, 5.01 is finally out and the development of Memtest86+ is now fully resumed. Regular updates will follow soon. We still have some issues to solve with embedded menu items and we must add support for IVB-E, HSW-E & BDW.
Tips : F1 will enable fail-safe mode, F2 will enable SMP Mode (disabled by default) and F3 will trigger an hidden alternative SMP Mode.
Memtest86+ V5.01 changelog
- Added support for up to 2 TB of RAM...
To help getting memtest recognising more chipsets i made this thread, so that people could leave a cpu-z dump everytime they found a chipset that memtest wasn't detecting.
Original Thread by Sven Bent.
A simple primer on how to get Memtest86+ to boot from a USB Drive or Hard Drive (without having to install an entire distro or DOS).
note: drive used here is a usb drive located on /dev/sda, so make changes accordingly (eg a hard drive install would use /dev/hdc instead)
First Step - format the drive
optional, only suggested if you're drive needs a good cleaning
(this may take a long time given the size of the drive)
dd if=/dev/zero of=/dev/sda Second Step - create FAT partitions...
Memtest86+ FAQ v1.21
By R.R. van der Vossen (Wichetael)
Latest update 2007-02-28
- What is memtest86+, what do I use it for?
CPU: Intel Ivybridge 3570k 3.4Ghz
RAM: Mushkin 996995 8GB
Firstly am I supposed to force SMT? Memtest86+ seems to think my PC is single core otherwise.
Secondly, after choosing SMT, the test freezes less than two minutes in. The few blinking symbols on-screen keep blinking, but the timer freezes, and the program doesn't respond to keypresses...
In case this is important: I installed MT86+ to USB from my Windows 8.1 computer using the installer.
Memtest86+ V5.00b6 changelog
- Added support for up to 2 TB of RAM on X64 CPUs
- Added experimental SMT support up to 32 cores
- Added complete detection for memory controllers.
- Added Motherboard Manufacturer & Model reporting
- Added CPU temperature reporting
- Added enhanced Fail Safe Mode (Press F1 at startup)
- Added support for Intel "Sandy Bridge-E" CPUs
Just wondering if there is likely to be any issues with running Memtest86+ (burnt to regular blank disc) via an external USB optical drive.
Memtest86+ is running with an Intel Prozessor Core i5-4440 3,1GHz 6MB Cache using 4 cores.
Memtest86+ is freezing while running test #7. Why?
Please help me.
Picture from the freezing:
As I was troubled with some rare "the program has stopped working" errors in the last time and intel burn test for ~0.5 hour with all available memory didn't show any problems, I decided to run memtest overnight. I didn't use this program for a long time and was confused about "F2 to force multithreading..." message. Of course, I used it, since I have 8-threaded CPU. The test showed about 200 errors, the last of them all in test 7 (actually, can one scroll up to see not only...
I noticed that memtest86+ does not support x2 APIC mode that was introduced with Intel Nehalem processors, so I added that tonight to smp.c. Mainly, x2APIC mode uses MSRs 0x800 - 0x83F instead of memory mapped I/O.
There are a lot of edits to the source, but that was mainly to eliminate tabs so code will align as intended.
Please review the attached source for possible inclusion in your next release.
I ran memtest on 6 different servers in our datacenter and it always fails at address 0007e56061c (near 2021MB. Select test range 2000m - 2048m).
When using memtest86+ v4.20, the test failed is #6, Good bit 00000002, bad 00000000, Err-Bits 00000002.
When using memtest86+ 5.01, the test test failed is #8, same good/bad/err-bits.
The servers used are IBM Flex System x240 with 10Gb, Intel Xeon E5-2620 @ 2.00Ghz.
I have a new build that has been experiencing a few random BSODs and reboots (without BSOD) which seems to have started after I added another two sticks of RAM. I am not overclocking or manually setting timings or voltage on the RAM.
GSkill F3-1600C9D-8GAO (2 separately purchased sets: 4 X 4GB)
I acknowledge that this RAM isn't listed as compatible for this board yet but gave it shot anyway. That could be my first mistake but was running fine with...
When I did a test on 3 4GB modules (12GB, DDR3, 1333), the first pass took about 1:45 to finish (using the F2 SMT mode.) The second pass, however, took about 8:15 to finally finish. No errors were found, but this seems like an incredibly long time for a single pass of only 12GB of 1333 RAM. Is this normal?
The vast majority of the time was spent on Test #8. I believe that the rest of the tests took less than an hour, while Test #8 took the rest. On top of this, the percentages counters...
ICQ : 682834034
êtes-vous fatigué d'etre volé ? Avez-vous besoin de la
I created a bootable USB drive using memtest86+-5.01.usb.installer. I checked the format option. When selected as boot device, the system booted from the hard drive instead.
I then recreated the same drive using memtest86+-4.20.usb.installer. Again I checked the format option. When selected as boot device, the system booted to the Memtest86+ v4.20 test screen with no problem.
The only difference is the version of the installer. The drive, the install procedure, the PC, and the boot...
Build: precombiled bootable ISO
In test #11 memtest reports error for every memory location. Tested on two physical machines. On both 4.20 reports no errors. The bug also consistently appears on a virtual machine.
The "bad" pattern is always equal to the current memory address, which confirms that this is not a random memory error.
Steps to reproduce:
Hi I'm running the Memtest86+ 5.01 now on my system for 11+ hours. It's showing it's on the second Pass @ 42% Test 15%.
I do have 24GB of RAM but how long does this thing take? And when will it be finished? Does it stop automatically and provide some summary report or something... Or do I stop it when I feel it's tested enough?
Can someone please tell me, if mainboards with ...
North Bridge: AMD 740G
South Bridge: AMD SB710
Hello, i have the following problem..
i have a server with no physical KVM support, it is very costly from my provider (OVH).. but i have the rescue mode which i can enter.. it's a basically debian derived distro where i can run various linux commands from ssh and run various tests.. including ram..
the ram test however is very simple and not accurate and powerful as memtest86+
there's a way i can run a sort of unattended memtest86+ test that could write on a txt file the output after...
memtest86+ (not memtest86) seems to get incorrect memory regions when started from coreboot+seabios on both the Chromebook Pixel, and the Acer C7 chromebook.
I've done a bit of debugging, and it's hitting a reserved I/O mem region at 0xacedd000 - this then fails test 1 for obvious reasons. Booting linux on the same machine gives:
amongst the boot messages, and the memtest86 v4.3.6 option 'misc -> print memory map' shows that this region isn't tested by...
Just created a USB stick using the USB installer. Only thing to note is that I ticked the format check in this program. There's nothing else I can do wrong, afaik...
So, plugged it in, booted from it, and now getting this message:
Missing operating system
Insert system disk in drive.
Press any key when ready...
The pc in question can boot from USB, and what's more, it can boot from this particular USB drive. Just not from the software that's now on it. It's a laptop with a good ol'...
I just bought a used laptop on Ebay and wanted to test is before I start using it. The laptop has 2 DIMMs of 2GB each. When I run memtest86+ with both DIMMS in place, I get 300 or so memory errors. The odd thing is, when I test both DIMM individually, it passes the tests. However I get some random freezes, no matter with DIMM I test. With 2 DIMMS I get errors, but less frequent freezes. The errors always appear around the 5950..5050MB range, even when I swap the DIMMs around. Does this...
I apologize if I'm asking the obvious question. This is the first time that I run Memtest86+. Take a look at the screenshot of the test on my Dell XPS 8700 tower:
This is my new RAM that I just bought from here.
It was listed as running at 1600MHz, with 10-10-10-27 latency. But what I'm seeing as an output from the program is 3 different numbers (circled in the screenshot):
My ? is do I do any thing in the configuration menu or even though it says it is complete and to press ESC to exit I see one thing above that says test 9 and I'm not sure if I am saposed to let it keep running or do I do something in the configure menu and if not and I'm saposed to ESC and exit I have only been able to go into safe mode so when I am saposed to exit where do I find the results in safe mode? I am running Mentest86+ v5.01 on windows 7 32bit pro version so I hope some one will let...
I was running Memtest v5 and accidentally hit the space bar during one of the passes. It seemed to jump from Test 1 to Test 5. I was just curious what the purpose of this was and if hitting the space bar in any way damages the RAM or invalidates the test results? I would sincerely appreciate anyone's feedback. I was curious b/c I could find very little about this online.
To whom it may concern,
Could you please add a new feature to next version ?
Please beep from the buzzer if memory failure, that would be helpful if you are not in front of the PC.
Actually , I am using a 640x240 6.2" panel and the screen is been cut so that I can't see right and bottom half screen, shown as follow
That would be appreciated.
I've scrolled back 9 pages and tried things that other people have posted, to no avail. here is my problem.
my antivirus is not interfering with files writing to the USB.
However, the installer is apparently not writing all of the files to my USB. (I have enabled hidden files, and nope they are still not there.)
When I load from the USB it just sits there with a blinking cursor on the left upper corner.
My question is, can I get a copy of the files and I'll put them all on myself,...
Using Memtest86+ v5.01, F2 at boot to enable multi core. This is on an HP xw6600 workstatiion with 2 E5450 quad core Xeon processors (8 cores total) and 24GB RAM First off, according to http://www.cpu-upgrade.com/CPUs/Intel/Xeon/E5450.html This proc has: L1 cache: 128KB (code) + 128KB (data) L2 cache: 12MB Now this is per processor, and there are 2 of them (24MB total L2 cache). Memtest86+ only shows L1 cache: 64K, L2 cache: 6144K. Second issue, When running multi core, cores 0-3 seem to run...
I used memtest86 to do some diagnostics and used a 4GB USB drive to do so.
What I want to know is how do I restore my USB drive to its original 4GB capacity state.
Right now it's only showing a capacity of 49MB.
The link with the steps at http://www.memtest86.com/technical.htm#recover is a dead end.
Running 5.01 booting from CD-ROM. The memtest screen is displayed and tests run with no apparent errors. Screen updates normally, I think, but after a few seconds the screen flashes to black, then immediately comes back to the memtest screen as if nothing happened. The screen flickers like this something like every ten seconds or so -- not on a regular pattern. Sometimes the flickers come one right after another.
This box is having other problems (BSOD's in particular) which is why I'm...
Wondering if installing memtest on a SSD drive would help it get through the test faster. Or maybe 2 x SSD's that are in Raid 0? Would the speed of the SSD make much difference? Or how about running off a USB 3.0 thumb drive?
my cpu was at 54degC. tCase is 68degC for the i7-3970x.
using XMP 1.3 mode (1600 or 800MHz) for memory (see signature).
this could be due to a bug. the memory gets pretty hot. does memory overheat shutdown the system?
around beginning of test #7 it shutdown the pc. it's consistent.
when I started memtest, I hit F2 to force multithreaded mode to speed things up.
hitting F2 on my p4-ht system causes a lockup and it doesn't even get to the point of starting start any tests.
Hi, I was getting BSOD and decided to test with MEMTEST and the test showed many many errors, so I reseated my memory sticks and switched them as well. Tested it, and it passed.
THen, got another BSOD, and tested again, and got 4 or 5 errors, but here is my question. Under cores, it shows 1 active / 1 total. I have a dual core system, and have noticed in other people's screenshots that it should recognize the number of cores. Right?
Also, this may be a stupid question, but the Memetest...
Hello memtest86+ experts!
I've purchased an Asus M4A785TD-V EVO/U3S6 Mainboard and installed 8 Gbytes of PC3-10600E Memory (2x 2 Gbyte DELL 2Rx8 Modules and 2x 2 Gbyte Hynix 2Rx8 Modules). If I run memtest86+ without ECC support enabled in BIOS the test passes with no errors. When I enable ECC support in BIOS, memtest86+ shows several errors (not ECC errors!). As there are more than 40000 errors shown I doubt a failure of the RAM-modules. May it be a bug in memtest86+ ?
Thanks for your...
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