random BSOD No driver spec

Hello,

I'd suspect there's either a hard drive or RAM problem here. Start with a hard drive test:

SeaTools for Windows | Seagate

Run the Blend Prime95 test as well:

Hardware - Stress Test With Prime95

Finish up with Memtest86:

RAM - Test with Memtest86+

Code:

Event[1858]:
  Log Name: System
  Source: Ntfs
  Date: 2012-04-04T20:17:01.498
  Event ID: 57
  Task: N/A
  Level: Warning
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Giacomo-PC
  Description: 
The system failed to flush data to the transaction log. Corruption may occur.

Event[1859]:
  Log Name: System
  Source: Disk
  Date: 2012-04-04T20:17:01.498
  Event ID: 51
  Task: N/A
  Level: Warning
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Giacomo-PC
  Description: 
An error was detected on device \Device\Harddisk1\DR1 during a paging operation.