Volume bar Muting

My volume bar has been muting several times. The infection spread and gradually my system began to restart after every 2 minutes so i used hiren's boot cd to format all my drives and reinstalled windows xp SP2 but the volume bar muting happened once after reinstall whenever I press cntrl +alt +del my system acts wierdly by going to home window. When I press windows button on keyboard my system shuts down. Here is my HJT install log

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 6:17:12 PM, on 7/31/2010
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\Investor\Desktop\jxpiinstall-rv.exe
C:\Documents and Settings\Investor\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.in/
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SigmatelSysTrayApp] sttray.exe
O4 - HKLM\..\Run: [IntelAudioStudio] "C:\Program Files\Intel Audio Studio\IntelAudioStudio.exe" BOOT
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O17 - HKLM\System\CCS\Services\Tcpip\..\{0835353D-165B-418D-BCA2-854FD3ABB17F}: NameServer = 218.248.241.5 218.248.240.180
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll

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End of file - 1932 bytes

Hi,

Download DDS and save it to your desktop from here or here or here.
Disable any script blocker, and then double click dds file to run the tool.

• When done, DDS will open two (2) logs:
  1. DDS.txt
  2. Attach.txt
• Save both reports to your desktop. Post them back to your topic.

----

Please download MBRCheck to your desktop.

1. Double click MBRCheck.exe to run it (Right click and run as Administrator for Vista).
2. It will open a black window, please do not fix anything (if it gives you an option).
3. Exit that window and it will produce a log (MBRCheck_date_time).
4. Please post that log in your reply.

----

Download GMER here by clicking download exe -button and then saving it your desktop:

• Double-click .exe that you downloaded
• Click rootkit-tab, uncheck files option and then click scan.
• Don't check
  Show All
  box while scanning in progress!
• When scanning is ready, click Copy.
• This copies log to clipboard
• Post log (if the log is long, archive it into a zip file and attach instead of posting) in your reply.

Thanx for the help but meanwhile I have again reformatted and the status is pretty okay

Ok. Thanks for the heads up.