when im running a program that may lag my comp up or a program which is full screen it usually restarts the comp, my DxDiag log is:
------------------
System Information
------------------
Time of this report: 3/9/2008, 19

44
Machine name: MARTIN
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: ECS
System Model: KOB740
BIOS: Default System BIOS
Processor: AMD Athlon(tm) XP 2200+, MMX, 3DNow, ~1.8GHz
Memory: 224MB RAM
Page File: 263MB used, 283MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode
------------
DxDiag Notes
------------
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: SiS 650_651_M650_M652_740
Manufacturer: SiS
Chip type: SiS Generic
DAC type: Internal
Device Key: Enum\PCI\VEN_1039&DEV_6325&SUBSYS_63251039&REV_00
Display Memory: 32.0 MB
Current Mode: 1024 x 768 (32 bit) (60Hz)
Monitor: Plug and Play Monitor
Monitor Max Res: 1600,1200
Driver Name: SiSGRV.dll
Driver Version: 6.14.0010.3730 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 3/9/2006 19

40, 1868800 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: sisgrp.sys
Mini VDD Date: 3/9/2006 19

14, 245248 bytes
Device Identifier: {D7B71ED9-2065-11CF-1B7D-2F43A1C2CB35}
Vendor ID: 0x1039
Device ID: 0x6325
SubSys ID: 0x63251039
Revision ID: 0x0000
Revision ID: 0x0000
Video Accel: ModeMPEG2_D ModeMPEG2_C ModeMPEG2_A ModeMPEG1_A
Deinterlace Caps: n/a
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run
-------------
Sound Devices
-------------
Description: C-Media Wave Device
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_1039&DEV_7012&SUBSYS_030013F6&REV_A0
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: cmuda.sys
Driver Version: 5.12.0001.0046 (English)
Driver Attributes: Final Debug
WHQL Logo'd: n/a
Date and Size: 8/23/2004 15

12, 821760 bytes
Other Files:
Driver Provider: C-Media Inc.
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): Yes
Registry: OK
Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
Description: C-Media Wave Device
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: cmuda.sys
Driver Version: 5.12.0001.0046 (English)
Driver Attributes: Final Debug
Date and Size: 8/23/2004 15

12, 821760 bytes
Cap Flags: 0x0
Format Flags: 0x0
-----------
DirectMusic
-----------
DLS Path: C:\WINDOWS\SYSTEM32\drivers\GM.DLS
DLS Version: 1.00.0016.0002
Acceleration: n/a
Ports: Microsoft Synthesizer, Software (Not Kernel Mode), Output, DLS, Internal, Default Port
MPU-401, Hardware (Kernel Mode), Input, No DLS, External
MPU-401, Hardware (Kernel Mode), Output, No DLS, External
C-Media Wave Device, Software (Kernel Mode), Output, DLS, Internal
Microsoft MIDI Mapper [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
Microsoft GS Wavetable SW Synth [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
MPU-401 [Emulated], Hardware (Not Kernel Mode), Output, No DLS, External
MPU-401 [Emulated], Hardware (Not Kernel Mode), Input, No DLS, External
Registry: OK
Test Result: Not run
-------------------
DirectInput Devices
-------------------
Device Name: Mouse
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a
Device Name: Keyboard
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a
Poll w/ Interrupt: No
Registry: OK
-----------
USB Devices
-----------
+ USB Root Hub
| Vendor/Product ID: 0x1039, 0x7001
| Matching Device ID: usb\root_hub
| Service: usbhub
| Driver: usbhub.sys, 8/4/2004 01

00, 57600 bytes
| Driver: usbd.sys, 8/4/2004 01

00, 4736 bytes
----------------
Gameport Devices
----------------
+ SIS PCI to ISA bridge
| Location: PCI bus 0, device 2, function 0
| Matching Device ID: pci\ven_1039&dev_0008
| Service: isapnp
| Driver: isapnp.sys, 8/4/2004 01

00, 35840 bytes
|
+-+ Standard Game Port
| | Matching Device ID: *pnpb02f
| | Service: gameenum
| | Driver: gameenum.sys, 8/3/2004 23

22, 10624 bytes
------------
PS/2 Devices
------------
+ PC/AT Enhanced PS/2 Keyboard (101/102-Key)
| Matching Device ID: *pnp030b
| Service: i8042prt
| Driver: i8042prt.sys, 8/4/2004 01

00, 52736 bytes
| Driver: kbdclass.sys, 8/4/2004 01

00, 24576 bytes
|
+ Terminal Server Keyboard Driver
| Matching Device ID: root\rdp_kbd
| Upper Filters: kbdclass
| Service: TermDD
| Driver: termdd.sys, 8/4/2004 00

08, 40840 bytes
| Driver: kbdclass.sys, 8/4/2004 01

00, 24576 bytes
|
+ Microsoft PS/2 Mouse
| Matching Device ID: *pnp0f03
| Service: i8042prt
| Driver: i8042prt.sys, 8/4/2004 01

00, 52736 bytes
| Driver: mouclass.sys, 8/3/2004 21

34, 23040 bytes
|
+ Terminal Server Mouse Driver
| Matching Device ID: root\rdp_mou
| Upper Filters: mouclass
| Service: TermDD
| Driver: termdd.sys, 8/4/2004 00

08, 40840 bytes
| Driver: mouclass.sys, 8/3/2004 21

34, 23040 bytes
----------------------------
DirectPlay Service Providers
----------------------------
DirectPlay8 Modem Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.2180)
DirectPlay8 Serial Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.2180)
DirectPlay8 IPX Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.2180)
DirectPlay8 TCP/IP Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.2180)
Internet TCP/IP Connection For DirectPlay - Registry: OK, File: dpwsockx.dll (5.03.2600.2180)
IPX Connection For DirectPlay - Registry: OK, File: dpwsockx.dll (5.03.2600.2180)
Modem Connection For DirectPlay - Registry: OK, File: dpmodemx.dll (5.03.2600.2180)
Serial Connection For DirectPlay - Registry: OK, File: dpmodemx.dll (5.03.2600.2180)
DirectPlay Voice Wizard Tests: Full Duplex: Not run, Half Duplex: Not run, Mic: Not run
DirectPlay Test Result: Not run
Registry: OK
-------------------
DirectPlay Adapters
-------------------
DirectPlay8 Modem Service Provider: Motorola V. and Timeport Modem
DirectPlay8 Modem Service Provider: Communications cable between two computers
DirectPlay8 Serial Service Provider: COM1
DirectPlay8 TCP/IP Service Provider: Local Area Connection 2 - IPv4 -
-----------------------
DirectPlay Voice Codecs
-----------------------
Voxware VR12 1.4kbit/s
Voxware SC06 6.4kbit/s
Voxware SC03 3.2kbit/s
MS-PCM 64 kbit/s
MS-ADPCM 32.8 kbit/s
Microsoft GSM 6.10 13 kbit/s
TrueSpeech(TM) 8.6 kbit/s
-------------------------
DirectPlay Lobbyable Apps
-------------------------
------------------------
Disk & DVD/CD-ROM Drives
------------------------
Drive: C:
Free Space: 41.9 GB
Total Space: 76.3 GB
File System: NTFS
Model: MAXTOR STM380215A
Drive: D:
Free Space: 4.3 GB
Total Space: 5.0 GB
File System: NTFS
Model: QUANTUM FIREBALLlct20 20
Drive: E:
Free Space: 6.4 GB
Total Space: 7.4 GB
File System: NTFS
Model: QUANTUM FIREBALLlct20 20
Drive: F:
Free Space: 1.3 GB
Total Space: 3.0 GB
File System: NTFS
Model: QUANTUM FIREBALLlct20 20
Drive: G:
Free Space: 2.3 GB
Total Space: 4.1 GB
File System: NTFS
Model: QUANTUM FIREBALLlct20 20
Drive: H:
Model: CREATIVE CD-RW RW8439E
Driver: c:\windows\system32\drivers\cdrom.sys, 5.01.2600.2180 (English), 8/4/2004 01

00, 49536 bytes
Drive: I:
Model: DVD-16X DVD1648/BKH
Driver: c:\windows\system32\drivers\cdrom.sys, 5.01.2600.2180 (English), 8/4/2004 01

00, 49536 bytes
i have scanned for viruses and im clean. i once had a BSOD which said that the error is a file called sisgrv.dll which i found out is in my System32 folder and its probably the driver in my comp that keeps it stable.
please tell me what to do to fix this (if there is anything)
i will thank and rep+ whoever tells me something that i can do that will stop this from happening.
thanks.