Windows 7: Random Freezes in Windows 7 ultimate 64bit

 
Event[1013]:
  Log Name: System
  Source: EventLog
  Date: 2011-05-10T21:55:05.000
  Event ID: 6008
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The previous system shutdown at 21:52:12 on ý10/ý05/ý2011 was unexpected.
 
Event[1014]:
  Log Name: System
  Source: Microsoft-Windows-Kernel-Power
  Date: 2011-05-10T21:54:58.814
  Event ID: 41
  Task: N/A
  Level: Critical
  Opcode: Info
  Keyword: N/A
  User: S-1-5-18
  User Name: NT AUTHORITY\SYSTEM
  Computer: Oran-PC
  Description: 
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
 
Event[364]:
  Log Name: System
  Source: VDS Basic Provider
  Date: 2011-05-12T17:37:44.000
  Event ID: 1
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
Unexpected failure. Error code: D@01010004
 
Event[3424]:
  Log Name: System
  Source: Disk
  Date: 2011-05-06T10:40:28.800
  Event ID: 11
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The driver detected a controller error on \Device\Harddisk1\DR2.
 
Event[3435]:
  Log Name: System
  Source: cdrom
  Date: 2011-05-06T10:40:26.243
  Event ID: 7
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The device, \Device\CdRom0, has a bad block.
 
Event[10672]:
  Log Name: System
  Source: Service Control Manager
  Date: 2011-04-20T09:48:45.684
  Event ID: 7026
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The following boot-start or system-start driver(s) failed to load: 
AFD
AppleCharger
CSC
DfsC
discache
ehdrv
LUMDriver
NetBIOS
NetBT
nsiproxy
Psched
rdbss
SCDEmu
spldr
tdx
Wanarpv6
WfpLwf
 
Event[10681]:
  Log Name: System
  Source: Service Control Manager
  Date: 2011-04-20T09:48:44.078
  Event ID: 7001
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The Network Store Interface Service service depends on the NSI proxy service driver. service which failed to start because of the following error: 
A device attached to the system is not functioning.
 
Event[11164]:
  Log Name: System
  Source: BTHUSB
  Date: 2011-04-19T12:13:41.587
  Event ID: 17
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Oran-PC
  Description: 
The local Bluetooth adapter has failed in an undetermined manner and will not be used. The driver has been unloaded.