BSOD - System Service Exception

Hi,

Recently I've been having BSOD issues on my laptop, a Lenovo T440s. Initially, these were DRIVER_IRQL_NOT_LESS_OR_EQUAL issues, but after my computer failed to start up properly one time, forcing me to do a reset, the BSODs I am getting now are SYSTEM SERVICE EXCEPTION. I've run chkdsk, sfc /scannow, and DISM, as well as Lenovo's hardware scans a few days ago for the previous BSODs, which came back clean, and unfortunately I didn't know about minidumps before today so I do not have the previous dump files. I've attached the most recent BSOD's dumpfile as instructed in the BSOD Instructions post. The minidump created by Windows says

Code:

Probably caused by : memory_corruption ( nt!MiOffsetToProtos+2e )

which I'm guessing is a RAM issue? For background, the RAM on my laptop consists of one 4 GB stick soldered to the motherboard and one 8 GB stick that can be removed. The laptop is about 4.5 years old and these BSODs have only begun to occur recently, though I haven't made any big changes in the recent past.

Thanks very much for any help!

Yesterday, I removed the removable 8 GB stick of RAM, and ran the Windows Memory Diagnostic Tool on the remaining stick, which brought back no errors. However, I just had another System Service Exception BSOD today, though it also mentioned win32kfull.sys. I've attached another log with the new minidump.

There is a problem with the creation of the logfiles. Please try the beta08 version provided at the end of the BSOD Posting instructions. Thanks!

Sorry, it seems I must have accidentally run Advanced SystemCare at some point and it's deleted the minidump files... If another BSOD happens I will use the beta version and upload it.