Originally Posted by maanas
I get a "windows has recovered from an unexpected problem sorta message with BCCode 124. Yesterday the Bsod showed Apc_index_mismatch and today I got Memory Management(pic attached).
Hi. . .
You mentioned bugcheck 0x124
, which is "WHEA" = W
rchitecture, a/k/a "Machine Check Exception".
BSODs are notoriously difficult to solve because the cause is simply "unknown hardware failure".
Unfortunately, the kernel memory dumps are incapable of telling us which piece of hardware has failed. Dumps are only good for figuring out software problems.
All I can really do here is to give you some hardware diagnostic programs to run.
The problem may also be with other hardware parts such as the motherboard or PSU for which there are no software tests.
Both RAM and HDD diagnostic tests are DOS-based, so Windows does not load during boot-up. You will be booting from your system's DVD/CD drive, so you may need to change the "firing order" (the order in which the system determines which device to boot from first -- e.g., the HDD, USB, DVD/CD drive, etc... ).
Make sure that the DVD/CD drive is first in the BIOS firing order.
If the system [seems to] skips the DVD/CD drive and attempts to boot from the internal HDD, then there is a problem with the CD disc itself or perhaps a problem with the DVD/CD drive.
You will need at least two (2) CD discs -- one (1) for the RAM test and one (1) for the HDD test.
I have found that CD-R
type CD discs work best, but you are of course welcome to use whatever kind of CD discs you wish to use.
Here are CD-R discs available from Amazon (listing is sorted by lowest price first + all are FREE shipping) - https://www.amazon.com/s/ref=sr_st_p...price-asc-rank
From Walmart - CD-R discs (be sure to check out shipping costs) - https://www.walmart.com/c/kp/cd-r-discs
Walmart - CD-R discs - packages under $5.00 - (watch out for shipping costs and check quantity/ number of discs per package) - https://www.walmart.com/c/kp/cd-r-di...rt=best_seller
I would not advise buying refurbished CD discs, even though they are cheaper. It simply is just not worth the risk.
If you are encountering a specific hardware issue, feel free to post in our Hardware Forum - Motherboards, Bios & CPU
Since you mentioned "new RAM" installed about 2 weeks ago - that is where I would start. Did you replace ALL RAM sticks, replace just 1, or add RAM to the system?
Is all of the RAM matched? i.e., are the specs on all RAM stick(s) the same?
It is always recommended that when you replace RAM, that you replace ALL sticks - not just one or two. Replacing ALL sticks guarantees that the RAM will be matched.
If you replaced just 1 RAM stick and have another installed, take out the new RAM stick and run the system with the remaining old RAM stick(s) and see if the BSODs continue.
It is of vital importance that when you run memtest86+ one stick at a time and alternate the slots. In other words, each stick of RAM must be tested by itself in every slot.
Did you have BSODs before you replaced the RAM?
Why did you replace the RAM?
Regards. . .
You also provided a screenshot of a 0x1a (0x00005100,,,)
bugcheck BSOD. Thank you!
bugcheck translates to a "severe memory management error
"; the first number inside the parentheses - 0x5100
translates to -
The allocation bitmap is corrupt. The memory manager is about to overwrite a virtual address that was already in use.
That simply means that memory corruption was about to occur as the memory manager was being instructed to write *whatever* to a virtual memory address or memory address range (virtual memory is the page file, where RAM is your physical memory sticks), but the system realized that the memory address or memory address range was already in use and therefore prevented the overwrite, which would have caused additional problems.
So, to avoid the overwriting of the virtual memory address(es), the system issued a BSOD - to avoid further memory corruption. Nice of the system to do that, huh? :)
It is obvious to me that you are experiencing memory issues. The fact that you replaced or changed out your physical RAM stick(s) within the last 2 weeks must be connected to these crashes, in my opinion.
Please elaborate more on what your RAM setup was before and then after the RAM change.