Hello sychnant.
Checked three of your latest crash dumps, and in one I found it: BUCKET_ID: SINGLE_BIT_CPU_CALL_ERROR
Code:
*******************************************************************************
* *
* Bugcheck Analysis *
* *
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KERNEL_MODE_EXCEPTION_NOT_HANDLED_M (1000008e)
This is a very common bugcheck. Usually the exception address pinpoints
the driver/function that caused the problem. Always note this address
as well as the link date of the driver/image that contains this address.
Some common problems are exception code 0x80000003. This means a hard
coded breakpoint or assertion was hit, but this system was booted
/NODEBUG. This is not supposed to happen as developers should never have
hardcoded breakpoints in retail code, but ...
If this happens, make sure a debugger gets connected, and the
system is booted /DEBUG. This will let us see why this breakpoint is
happening.
Arguments:
Arg1: c000001d, The exception code that was not handled
Arg2: 9bfe856b, The address that the exception occurred at
Arg3: 8e357bf4, Trap Frame
Arg4: 00000000
Debugging Details:
------------------
EXCEPTION_CODE: (NTSTATUS) 0xc000001d - {EXCEPTION} Illegal Instruction An attempt was made to execute an illegal instruction.
FAULTING_IP:
+0
9bfe856b ?? ???
TRAP_FRAME: 8e357bf4 -- (.trap 0xffffffff8e357bf4)
ErrCode = 00000000
eax=3004c230 ebx=00000010 ecx=fe311e90 edx=00000000 esi=fe311dd8 edi=00000210
eip=9bfe856b esp=8e357c68 ebp=8e357cb4 iopl=0 nv up ei pl zr na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010246
9bfe856b ?? ???
Resetting default scope
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
BUGCHECK_STR: 0x8E
PROCESS_NAME: iexplore.exe
CURRENT_IRQL: 0
LAST_CONTROL_TRANSFER: from 99fe8044 to 9bfe856b
FAILED_INSTRUCTION_ADDRESS:
+0
9bfe856b ?? ???
POSSIBLE_INVALID_CONTROL_TRANSFER: from 99fe803f to 99fe856b
SINGLE_BIT_ERROR: 1
TWO_BIT_ERROR: 1
STACK_TEXT:
WARNING: Frame IP not in any known module. Following frames may be wrong.
8e357c64 99fe8044 fe311dd8 1427ba5c 0373d96c 0x9bfe856b
8e357cb4 99fdcf0e 8e357ce4 000025ff 00000000 win32k!xxxRealInternalGetMessage+0x422
8e357d18 8307d8fa 0373d96c 00000000 00000000 win32k!NtUserPeekMessage+0x3f
8e357d18 77697094 0373d96c 00000000 00000000 nt!KiFastCallEntry+0x12a
0373d8e8 00000000 00000000 00000000 00000000 0x77697094
STACK_COMMAND: .trap 0xffffffff8e357bf4 ; kb
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: hardware
IMAGE_NAME: hardware
DEBUG_FLR_IMAGE_TIMESTAMP: 0
BUCKET_ID: SINGLE_BIT_CPU_CALL_ERROR
Followup: MachineOwner
--------- Stress test the CPU.
Hardware - Stress Test With Prime95
The other two doesn't say anything precisely, but shows NATIO.sys and tcpip.sys as errors; whereas both of them are network related. So probably something is to do with the network drivers.
Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Code:
Name [00000011] Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Driver c:\windows\system32\drivers\bcmwl6.sys (5.100.82.105, 4.07 MB (4,267,072 bytes), 07/02/2012 17:21)
-------------------------------------------------------------------------------------------------
93c3e000 94053000 bcmwl6 (deferred)
Image path: \SystemRoot\system32\DRIVERS\bcmwl6.sys
Image name: bcmwl6.sys
Timestamp: Thu Sep 01 07:08:45 2011 (4E5EE225)
CheckSum: 0042129F
ImageSize: 00415000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4 Search for updates in HP's site. In Broadcom, nothing is available. (Actually this thing is a big headache .... at least for me

)
Realtek PCIe GBE Family Controller
Code:
Name [00000007] Realtek PCIe GBE Family Controller
Driver c:\windows\system32\drivers\rt86win7.sys (7.54.309.2012, 509.10 KB (521,320 bytes), 16/05/2012 14:13)
---------------------------------------------------------------------------------------------------
9405d000 940dd000 Rt86win7 (deferred)
Image path: \SystemRoot\system32\DRIVERS\Rt86win7.sys
Image name: Rt86win7.sys
Timestamp: Fri Mar 09 18:08:58 2012 (4F59F9E2)
CheckSum: 00089653
ImageSize: 00080000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4 Update it from
Realtek.
Broadcom Bluetooth LAN Access Server Driver
Code:
Name [00000016] Bluetooth Personal Area Network
Driver c:\windows\system32\drivers\btwdpan.sys (6.5.0.710, 74.54 KB (76,328 bytes), 07/02/2012 17:24)
----------------------------------------------------------------------------------------------------
910e5000 910fd000 btwdpan (deferred)
Image path: \SystemRoot\system32\DRIVERS\btwdpan.sys
Image name: btwdpan.sys
Timestamp: Mon May 16 20:27:43 2011 (4DD13B67)
CheckSum: 0001C6B8
ImageSize: 00018000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4 Get it from
Ethernet NIC Driver Downloads | Broadcom
TP-LINK 150Mbps Wireless Lite N Adapter: not getting info about in in your data. If you still use it, update the drivers form the manufacturer's site.
Scan the system for possible virus infection.
Let us know the results.