windows randomly crashing

Dear all

I just rebuilt my pc and it just crashes randomly. Could it be that i have missed some of the jumper settings on the motherboard? I just replaced my motherboard in a new case. What i might have done wrong it some of the cable connections. This is the error log i get:

Event Type: Error
Event Source: System Error
Event Category: (102)
Event ID: 1003
Date: 2/24/2007
Time: 4:05:13 PM
User: N/A
Computer: BEAST
Description:
Error code 1000008e, parameter1 c0000005, parameter2 805947c1, parameter3 b95478d0, parameter4 00000000.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 53 79 73 74 65 6d 20 45 System E
0008: 72 72 6f 72 20 20 45 72 rror Er
0010: 72 6f 72 20 63 6f 64 65 ror code
0018: 20 31 30 30 30 30 30 38 1000008
0020: 65 20 20 50 61 72 61 6d e Param
0028: 65 74 65 72 73 20 63 30 eters c0
0030: 30 30 30 30 30 35 2c 20 000005,
0038: 38 30 35 39 34 37 63 31 805947c1
0040: 2c 20 62 39 35 34 37 38 , b95478
0048: 64 30 2c 20 30 30 30 30 d0, 0000
0050: 30 30 30 30 0000


Any ideas of what it might be?

Sincerely