Boot into safe mode. See how HERE.
http://www.bleepingcomputer.com/forums/tutorial61.html
Turn off system restore.(XP/ME only) See how HERE.
http://www.bleepingcomputer.com/forums/tutorial56.html
In Windows Explorer, turn on "Show all files and folders, including hidden and system". See how HERE.
http://www.bleepingcomputer.com/forums/tutorial62.html
Open your task manager, by holding down the ctrl and alt keys and pressing the delete key.
Click on the processes tab and end process for(if there).
gdnUS2338.exe
77d4a602.exe
Close task manager.
Click start/run and type regsvr32 /u C:\WINDOWS\SYSTEM32\wingdm32.dll into the run box and press the enter key. Note the space between the 2 and the forward slash and again between the u and c.
Run HJT with no other programmes open. Have HJT fix the following, by placing a tick in the little box next to(if there).
O2 - BHO: (no name) - {686a161d-5bd1-4999-8832-6393f41e564c} - C:\WINDOWS\system32\hp107.tmp (file missing)
O4 - HKLM\..\Run: [77d4a602.exe] C:\WINDOWS\system32\77d4a602.exe
O4 - HKCU\..\Run: [77d4a602.exe] C:\Documents and Settings\Hieuy Mac\Local Settings\Application Data\77d4a602.exe
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {3CB357E9-4F9C-7C14-A59C-05824F3A1827} -
http://85.255.113.214/1/gdnUS2338.exe
O16 - DPF: {9600F64D-755F-11D4-A47F-0001023E6D5A} (Shutterfly Picture Upload Plugin) -
http://web1.shutterfly.com/downloads/Uploader.cab
O20 - Winlogon Notify: wingdm32 - C:\WINDOWS\SYSTEM32\wingdm32.dll
Click on the fix checked button.
Close HJT.
Locate and delete the following
bold files and/or directories(if there).
C:\WINDOWS\SYSTEM32\
wingdm32.dll
gdnUS2338.exe
C:\Documents and Settings\Hieuy Mac\Local Settings\Application Data\
77d4a602.exe
C:\WINDOWS\system32\
77d4a602.exe
C:\WINDOWS\system32\
hp107.tmp
Reboot into normal mode and turn system restore back on.
Post a fresh HJT log.
Regards Howard