System Hangs Forever

Do you mean there are no BSOD's? There seem to be no new dump files in the SF diag report.

• Start by removing Avast! from the system Uninstallers (removal tools) for common antivirus software - ESET Knowledgebase

Code:

Event[2]:
  Log Name: System
  Source: Microsoft-Windows-FilterManager
  Date: 2013-01-15T14:47:09.016
  Event ID: 6
  Task: N/A
  Level: Information
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT AUTHORITY\SYSTEM
  Computer: SwapSpaceSystem
  Description: 
File System Filter 'aswSnx' (6.0, ?2012?-?10?-?30T16:44:08.000000000Z) has successfully loaded and registered with Filter Manager.

• Replace with Microsoft Security Essentials is recommended from a strict BSOD perspective. Run a full scan with both (separately) once downloaded, installed and updated.

Microsoft Security Essentials, Free antivirus for windows
Malwarebytes Anti-Malware Free
Good and Free system security combination

   Warning

Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

Code:

ACPI thermal zone ACPI\ThermalZone\THM_ has been enumerated.             
_PSV = 0K             
_TC1 = 0             
_TC2 = 0             
_TSP = 0ms             
_AC0 = 0K             
_AC1 = 0K             
_AC2 = 0K             
_AC3 = 0K             
_AC4 = 0K             
_AC5 = 0K             
_AC6 = 0K             
_AC7 = 0K             
_AC8 = 0K             
_AC9 = 0K             
_CRT = 357K             
_HOT = 0K             
_PSL - see event data.

Heat:

Only use the laptop on a hard surface - with nothing blocking any of the vents.
Use a laptop cooling pad if possible
Blow out all vents with canned air (DO NOT use a vacuum cleaner or an air compressor, they can damage the components).
Ensure that the fan comes on and is blowing air out of the vent (may not happen at startup, but should happen after using it for a while).

For monitoring heat of the system, use Speccy or HWMonitor:

• Speccy System Information
• HWMonitor

• Use the System File Checker tool (SFC.exe) to determine which file is causing the issue, and then replace the file.

To do this, follow these steps:

• Open an elevated command prompt. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow. Use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
• At the command prompt, type the following command, and then press ENTER: sfc /scannow
• The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions. SFC /SCANNOW Command - System File Checker