windows 7 - tracking down the cause of bluescreen error (code 124)

I've been having problems with a blue-screening Laptop (BCCode 124), and I've been trying to track down whats causing it. (It bluescreened randomly after 5-30 minutes of running in win7). It worked in safe mode. I tried reinstalling Windows, which didn't work, so I tried to install various Linux systems which also didn't work.

The only thing working right now is the parted magic version of the ultimate boot cd.(Its a repair linux distro that runs live from ram)

I had the idea to run a bunch of stability tests to try and isolate the faulty component(s), and I wanted some input on my results.

I did different cpu stresstests for different times. No problem (temerature ~60°C sometimes peaks at 65)

I ran memtest with no errors many times.

I also did a GPU check wich is included in the ultimate boot cd - parted magic distro - no problem.

I also checked the hard drive with different tools included in parted magic - no problem there too.

Every linux system I try to install crashes when I try to install it. (It either freezes with no error (rarely happens) or I get something like this shortly after I tell it to install (tried about 20 different distros): [*] 3 photos in the dropbox

Trying to isntall windows 7 just gives a generic "there was a problem" / "an error has occured" screen with no further information.

The laptop is a Lenovo B570. Here are the detailed system specs (the ram is a 4GB kingston now) [*] the hardinfo file in the dropbox

I have 3 crashdumps from Windows wich I can not open. (visual studio says it cant open old crashdump files) [*] 3 dumps in the dropbox

Can you help me to track down the cause?

Edit: im not allowed to post more than 2 links here so here the dropboxfolder with all the things I mentioned:

[*] https://www.dropbox.com/sh/f5v1tojm72js4nm/AADmKa0ahEi036ynHBXJUtDQa?dl=0

Answer

You get a GCACHEL2_EVICT_ERR error (level-2 cache error during a cache eviction event).

0: kd> !errrec fffffa800966a038
===============================================================================
Common Platform Error Record @ fffffa800966a038
-------------------------------------------------------------------------------
Record Id     : 01d0f21d97143e24
Severity      : Fatal (1)
Length        : 873
Creator       : Microsoft
Notify Type   : Machine Check Exception
Timestamp     : 9/18/2015 14:25:03 (UTC)
Flags         : 0x00000000

===============================================================================
Section 0     : Memory
-------------------------------------------------------------------------------
Descriptor    @ fffffa800966a0b8
Section       @ fffffa800966a190
Offset        : 344
Length        : 73
Flags         : 0x00000001 Primary
Severity      : Fatal

Physical Addr.: 0x000000023c175dc0

===============================================================================
Section 1     : Processor Generic
-------------------------------------------------------------------------------
Descriptor    @ fffffa800966a100
Section       @ fffffa800966a1d9
Offset        : 417
Length        : 192
Flags         : 0x00000000
Severity      : Fatal

Proc. Type    : x86/x64
Instr. Set    : x64
Error Type    : Cache error
Operation     : Generic
Flags         : 0x00
Level         : 2
CPU Version   : 0x00000000000206a7
Processor ID  : 0x0000000000000000

===============================================================================
Section 2     : x86/x64 MCA
-------------------------------------------------------------------------------
Descriptor    @ fffffa800966a148
Section       @ fffffa800966a299
Offset        : 609
Length        : 264
Flags         : 0x00000000
Severity      : Fatal

Error         : GCACHEL2_EVICT_ERR (Proc 0 Bank 5)
  Status      : 0xfe2000000001117a
  Address     : 0x000000023c175dc0
  Misc.       : 0x000000372e004086

Look for a BIOS update, if this doesn't fix it, your L2 Cache is damaged and you have to replace the CPU.