"Windows Explorer Not Working" message on Start-up,causes blank screen

I recently received an old laptop that was factory restored from a relative, and started using to play games. Recently, however, I began to receive the message "windows explorer is not working" on startup, and about half the times it would go away and I would be able to use the computer (if i hit cancel a lot of times), and half the times it would just cause the interface to disappear, leaving only the background, and I would have to restart. The error would not pop up when I clicked on a folder, which is different from the problem that others have, and seems to only appear upon startup and when trying to access Event Viewer (however I managed to open it up through "event logs").
So far, I have tried:
-System Restore (dates don't reach far back enough, oddly)
-Uninstalling programs that may cause this (7-zip, etc.)
-Running a anti-virus scan (Malwarebytes Pro)
-Startup Repair
-Sfc /scannow (in both normal and safe modes)
-Memory Diagnostic Tool (RAM scanner)
-Updating Drivers
-Updating Windows
And I think that's it so far. Here is the error I found in the Event Viewer:
Faulting application name: Explorer.EXE, version: 6.1.7601.17567, time stamp: 0x4d672ee4
Faulting module name: MSVCR100.dll, version: 10.0.30319.460, time stamp: 0x4db1316a
Exception code: 0xc0000005
Fault offset: 0x000000000003c135
Faulting process id: 0x66c
Faulting application start time: 0x01cf5c25e937e442
Faulting application path: C:\Windows\Explorer.EXE
Faulting module path: C:\Windows\system32\MSVCR100.dll
Report Id: 31dd46e6-c819-11e3-82c6-8169f8e58409

I'm not really good at understanding what this means, but I'm assuming theres a problem with a file inside system32, and I don't want to touch the folder without some help and/or guidance. Thank you!