Can anyone help with this I've looked on the web but there is so much stuff under this heading that I'm a bit lost.....

Basically I get this message all the time...18 times this week according to the error log
Windows has recovered from an unexpected shutdown
Problem event name:.....BlueScreen
OS Version:.............6.06001.2.1.0768.3
Local ID:...............2057
This is a new PC just one week old as the one I got from Comet at New Year had a major systems failure.....

System
Mainboard : Packard Bell BV Unspecified
Chipset : nVidia nForce 720a
Processor : AMD Phenom X4 9550 @ 2200 MHz
Physical Memory : 3072 MB (3 x 1024 DDR2-SDRAM )
Video Card : NVIDIA GeForce 8200
Hard Disk : WDC (320 GB)
DVD-Rom Drive : Optiarc DVD RW AD-7203S SCSI CdRom Device
Monitor Type : Samsung SyncMaster - 22 inches
Network Card : Realtek Semiconductor RTL8139/810x Family Fast Ethernet NIC
Operating System : Windows Vista (TM) Home Premium Home Edition 6.00.6001 Service Pack 1
DirectX : Version 10.00
Windows Performance Index : 4.2