Windows Explorer Crashes Faulting module name: ntdll.dll

Ive been dealing with my Windows Explorer crashing every 5 minutes at work using Windows 7 64-bit Pro.

Faulting application name: Explorer.EXE, version: 6.1.7601.17567, time stamp: 0x4d672ee4

Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc0000374
Fault offset: 0x00000000000c40f2
Faulting process id: 0x1894
Faulting application start time: 0x01cdf365d0f14945
Faulting application path: C:\Windows\Explorer.EXE
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 310dd33b-600a-11e2-81b8-1c659db08da6

Here's what Ive done to address the issue:

1.   sfc /scannow

1. Start -> type cmd in search bar 
2. Right-click on cmd.exe and Run as Administrator

3. type sfc/scannow 

4. After its complete, restart.

Result:   didn't work.    My scenario was that nothing was corrupt or needed to be repaired.   Moving on.

2.   Memory Test

1. Start -> type cmd in search bar 
2. Right-click on cmd.exe and Run as Administrator
3. type  mdsched.exe
4. Run now or later

Result:   Everything ok here too.

3.    Removed anything that uses Shell Extensions

since most ntdll errors are due to shell extensions, decided to start removing items that affected explorer.exe.

1. Uninstalled Google Drive 
2. uninstalled CCleaner since it had an explorer shell menu item when you Right-click.

RESULT:   WIN!    No more crashes