IE had its good points but has been left behind by Chrome and FF, like you I stick with what suits me best
Uninstalling FF was only temporary to see if it helps, a fresh install sometimes does with any software, below is from your latest crash dump and you can clearly see that FF is involved, before moving on can I ask if you have a dumpfile for the latest crash;
BTW, Windows needs updating and after doing so can you please check for any updated drivers for your video chip.
Windows 7 Kernel Version 7601 (Service Pack 1) UP Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.19045.amd64fre.win7sp1_gdr.151019-1254
Machine Name:
Kernel base = 0xfffff800`0384c000 PsLoadedModuleList = 0xfffff800`03a93730
Debug session time: Mon Dec 21 18:06:03.803 2015 (UTC - 5:00)
System Uptime: 1 days 2:48:43.458
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
MEMORY_MANAGEMENT (1a)
# Any other values for parameter 1 must be individually examined.
Arguments:
Arg1: 0000000000041284, A PTE or the working set list is corrupt.
Arg2: 0000000028ea2001
Arg3: 000000000001d657
Arg4: fffff70001080000
Debugging Details:
------------------
TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2
BUGCHECK_STR: 0x1a_41284
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
PROCESS_NAME: firefox.exe
CURRENT_IRQL: 0
LAST_CONTROL_TRANSFER: from fffff80003917613 to fffff800038bfc40
STACK_TEXT:
fffff880`06f6b208 fffff800`03917613 : 00000000`0000001a 00000000`00041284 00000000`28ea2001 00000000`0001d657 : nt!KeBugCheckEx
fffff880`06f6b210 fffff800`038d9b29 : ffffffff`ffffffff 000fffff`ffffffff fffffa80`05784060 ffffffff`ffffffff : nt! ?? ::FNODOBFM::`string'+0x4adf
fffff880`06f6b250 fffff800`038b51fb : e5700000`1ff72867 fffff680`00147510 ffffffff`ffffffff 000fffff`ffffffff : nt!MiTerminateWsle+0x29
fffff880`06f6b290 fffff800`038ac942 : fffffa80`07960900 fffff800`00000000 fffffa80`05570060 fffffa80`055703f8 : nt!MiDecommitPages+0x20b
fffff880`06f6bb20 fffff800`038beed3 : ffffffff`ffffffff 00000000`0067e3c0 00000000`0067e3b8 fffffa80`00004000 : nt!NtFreeVirtualMemory+0x382
fffff880`06f6bc20 00000000`7740db9a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`0067e388 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x7740db9a
STACK_COMMAND: kb
FOLLOWUP_IP:
nt! ?? ::FNODOBFM::`string'+4adf
fffff800`03917613 cc int 3
SYMBOL_STACK_INDEX: 1
SYMBOL_NAME: nt! ?? ::FNODOBFM::`string'+4adf
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: nt
IMAGE_NAME: ntkrnlmp.exe
DEBUG_FLR_IMAGE_TIMESTAMP: 5625815c
FAILURE_BUCKET_ID: X64_0x1a_41284_nt!_??_::FNODOBFM::_string_+4adf
BUCKET_ID: X64_0x1a_41284_nt!_??_::FNODOBFM::_string_+4adf
Followup: MachineOwner