I need your heelp, blue screen i5 2500k:(:(:((

my system pc is:

proc- i5 2500k

ram- 4 gb single chanele 1333

mbu- msi p67a-c45

video card- ati shappire 5570 1gb ddr3

psu- 550w inter tech

hdd- 500gb 5500 r/min western digital

this components are compatible, the system hardware is ok??  what give blue screen???

this is error:

Dump File : 080112-18454-01.dmp
Crash Time : 8/1/2012 6:14:31 PM
Bug Check String : SYSTEM_SERVICE_EXCEPTION
Bug Check Code : 0x0000003b
Parameter 1 : 00000000`c0000005
Parameter 2 : fffff960`00046df9
Parameter 3 : fffff880`0bf0ad60
Parameter 4 : 00000000`00000000
Caused By Driver : win32k.sys
Caused By Address : win32k.sys+46df9
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+7f1c0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\080112-18454-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 277,144

please write corectly i don't know english...  thanks!!