The Witcher doesn't start

PC Wizard 2008 Version 1.84
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Owner: Admin
User: Admin
Operating System: Windows Vista (TM) Home Premium Home Edition 6.00.6001 Service Pack 1
Report Date: Friday 23 May 2008 at 10:56

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<<< System Summary >>>

> Mainboard : Acer F690GVM

> Chipset : AMD RS690/RS690M

> Processor : AMD Phenom 9500 @ 2200 MHz

> Physical Memory : 4096 MB (4 x 1024 DDR2-SDRAM )

> Video Card : Nvidia Corp GeForce 8600GS

> Hard Disk : ST3500830AS (500 GB)

> DVD-Rom Drive : Optiarc DVD RW AD-7200S ATA Device

> DVD-Rom Drive : SE4872O UYM923K SCSI CdRom Device

> Monitor Type : Samsung SyncMaster - 22 inches

> Network Card : Marvell Semiconductor (Was: Galileo Technology Ltd) Yukon 88E8056 PCI-E Gigabit Ethernet Controller

> Operating System : Windows Vista (TM) Home Premium Home Edition 6.00.6001 Service Pack 1

> DirectX : Version 10.00

> Windows Performance Index : 4.8


The game doesn't start and it just tells me it stopped working.