CPU usage spike

[fixmeplease]

Sorry but I had no idea where to put this problem in.

Hello!
Can someone please help me fix this cpu usage spiking problem. I can't play any game at all only 10 FPS. I used process explorer to find out what the spiking is about. So, I started the game, minimized it, then I saw svchost.exe(PID: 840) spiking like crazy. I checked the properties and saw RPCRT4.dll was the one spiking.

Specs:
Processor: AMD Athlon(tm) 64 Processor 4000+, ~2.6GHz
Memory: 2046MB RAM
Operating System: Windows Vista™
Speakers (Realtek High Definition Audio) I thought this was the problem and I updated the drivers but it didn't work
GFX Card: Nvidia 9500 GT

Logfile of Trend Micro HijackThis v2.0.3 (BETA)
Scan saved at 11:31:35, on 1/26/2010
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v7.00 (7.00.6001.18385)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe
C:\Windows\system32\taskeng.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Windows\System32\mobsync.exe
C:\Windows\system32\wbem\unsecapp.exe
C:\Program Files\Avira\AntiVir Desktop\avcenter.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Users\Shah Masood\Documents\Mozilla FireFox\firefox.exe
C:\Windows\system32\NOTEPAD.EXE
C:\Program Files\Hijackthis\TrendMicro\HiJackThis\HiJackThis.exe

O1 - Hosts: ::1 localhost
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Browser Address Error Redirector - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - c:\windows\system32\BAE.dll
O3 - Toolbar: (no name) - {7FEBEFE3-6B19-4349-98D2-FFB09D4B49CA} - (no file)
O3 - Toolbar: (no name) - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - (no file)
O3 - Toolbar: DAEMON Tools Toolbar - {32099AAC-C132-4136-9E9A-4E364A424E17} - C:\Program Files\DAEMON Tools Toolbar\DTToolbar.dll
O3 - Toolbar: (no name) - {F964C8FA-D904-4424-A47D-50FA9CFF4702} - (no file)
O4 - HKLM\..\Run: [RtHDVCpl] C:\Program Files\Realtek\Audio\HDA\RtHDVCpl.exe -s
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE')
O13 - Gopher Prefix:
O17 - HKLM\System\CCS\Services\Tcpip\..\{3CE007DE-5D3F-42E5-AE24-A8E6F7E61C2E}: NameServer = 10.0.0.1,10.0.0.12
O20 - AppInit_DLLs: C:\PROGRA~1\Google\GOOGLE~1\GOEC62~1.DLL
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\Windows\system32\browseui.dll
O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe

 

[raybay]

are your memory modules all the same brand and model? Are you using Value Ram?
What is your power supply brand and model?
What are the ages of your main components.

 

[fixmeplease]

are your memory modules all the same brand and model? Are you using Value Ram?
What is your power supply brand and model?
What are the ages of your main components.

Yes
Yes
I'm not sure
2-3 years