BSOD "System Service Exception" NTOSKRNL.exe

[bahnstormer]

Hi, my laptop was working perfectly until a recent reboot. I'm not sure if there was a system update that was applied at the time as I realised I hadn't rebooted for a while, so I manually closed all the apps and then went to reboot and walked out the room to grab a cup of coffee.

Now it gets a BSOD 🙁 reboot every time. The only error I can see is "System Service Exception".

I've had a look at the dump file and it says "caused by NTOSKRNL.exe" (every time).

It will boot okay into SafeMode with/without networking, so I've done all the backups I need, but as a matter of principle I want to get this working WITHOUT a rebuild!

It will BSOD on most of the other boot options (e.g. VGA / debugging / logged, etc).

I've tried running a CHKDSK /f and /r (from the pre-boot Troubleshooting Command prompt).
edit: and also triggered from SafeMode - where it then runs the chkdsk during the reboot.

There don't appear to be any system restore points or rollback options in the Troubleshooting options.

No hardware changes for 9 months.

Lenoxo X230, i7-3520M, 2x8Gb Crucial DDR3, Samsung 850 PRO 256Gb SSD. No other peripherals at all while I debug this.

Win10 ver 10.0.16299.192

Any help, suggestions or ideas would really be appreciated!!

 

[bahnstormer]

Okay... I've made some progress, but still not solved...

Lenovo BIOS boot tools (F12 on reboot, tab to Diagnostic Tools and run the storage and memory diagnostics test).

It's basically a built-in, lightweight version of MemTest86+ (for anybody wanting to do this type of test on a setup that doesn't have built in memory test tools).

I seem to be getting a memory error (UME001001-WNMV8N).

I've tried running:
both modules: fail
module #1: pass
module #2: fail
module #2, but in the slot for module #1: fail

I've now tried running with just the single, working 8Gb SO-DIMM, but I'm still getting the same crash.

I'll dig out MemTest86 and try some more thorough stability test and I'll try a pair of 4Gb SO-DIMM's that I've got in another one of these laptops at home.