Memory Controller Error
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Gaming Smartphones Tablets Windows 8 PSUs Android Your question Get the answer Tom's Hardware>Forum>Memory>Memory controller or user error?> Memory controller or user error? Tags: Memory Controller Last response: mca recoverable error 7 June 2010 23:17 in Memory Share talonsilver 5 June 2010 06:43:58
Mca Error Detected Via Polling
I have had my computer for a few years now. a few months ago it started locking up mca recoverable error ce memory controller error seemingly randomly. I started troubleshooting and the symptoms seemed to point to the memory. I ran a memory testing bootable and sure enough it indicated the 4th slot. I pulled
Machine Check Exception Vmware
it and replaced it with a new module only to have the exact same results. Finding this odd I pulled all the modules and tried all combination of single and dual channel with all modules I have. No matter the combination the last module in the array always tests as bad, ei 1 module single channel = slot 1, 2 modules machine check exception decoder single channel = slot 2, 2 modules dual channel = slot 3, 4 modules dual channel = slot 4. The only difference in the different configurations is that the more modules installed the faster they fail the tests. I have never used memory testing software before, so I dont know if these results existed before I started having problems. The results seem to be consistent in how they fail, expeted results +1 on all tests. I have a Gigabyte S-series GA-P35-DS3P mobo, and I'm using Kingston DDR2-800 1gb unbuffered RAM. CPU Intel core2 quad 2.4ghz. The lockup problem I have been having can happen just about any time, but occurs most frequently when I'm downloading something. More about : memory controller user error 4745454b a b } Memory 5 June 2010 13:00:44 Is the ram setup properly? Your not running any crazy ram, but perhaps they are older sticks or ones that need more then 1.8? Make sure the timings and voltage are set correctly. Lock ups can happen for more reasons then just bad ram. Its a good place t
while under a certain CPU or Memory intensive load - or even at random. Most of the times without throwing a Purple Screen of Death so you
Cmci Signaling For Patrol Scrub Ucr Errors Not Supported
can at least have a notion about what went wrong. There is a VMware
Intel Machine Check Exception Decoder
KB Article 1005184 concerning this issue, and it has been updated significantly since I have started to take interest in these machine check exception error errors. UPDATE: I have published a new CPU Stress Test & Machine Check Error debugging article - check it out if you'd like to learn more. If you are "lucky", you can see http://www.tomshardware.com/forum/275400-30-memory-controller-user-error and decode yourself what preceded the crash. This is because both AMD and Intel CPUs have implemented something by the name of Memory Check Architecture. This architecture enables the CPUs to intelligently determine a fault that happens anywhere on the data transfer path during processor operation. This can capture Memory operation errors, CPU Bus interconnect errors, cache errors, and much more. How to determine what https://vmxp.wordpress.com/2014/10/27/debugging-machine-check-errors-mces/comment-page-1/ has been causing your system to fail? Read on. You will need to browse to Intel's website hosting the Intel® 64 and IA-32 Architectures Software Developer Manuals. There, download a manual named "Intel 64 and IA-32 Architectures Software Developer's Manual Combined Volumes 3A, 3B, and 3C: System Programming Guide". I highly recommend printing it, because you will be doing some back-and-forth seeking. Now, to get list of possible Machine Check Errors captured by the VMkernel, run the following in your SSH session with superuser privileges: cd /var/log;grep MCE vmkernel.log this will output something similar to this: Most of the times, the VMkernel decodes these messages for you - on this image you see that there are plenty of Memory Controller Read Errors. You can see more closely where the problem originates from: CMCI: This stands for Corrected Machine Check Interrupt - an error was captured but it was corrected and the VMkernel can keep on running. If this were to be an uncorrectalbe error, the ESXi host would crash. Logical CPU number where the MCE was detected: This particular host had Dual 8-Core Intel Xeon Processors with HyperThreading enabled. For all other occurrences of this MCE, t
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