Hi,
Download and install Ad-Aware SE and CCleaner , do not run them now.
Make Windows to show all files:-
Go to Start > My Computer.
Go to Tools menu, click Folder Options (Folder Option will be in View Menu in Win98).
Uncheck Hide protected operating system files.
Then, click to select the option Show hidden files and folders.
Click Apply and then click OK to exit.
Reboot in Safe Mode:-
Restart (or switch ON) the PC.
Then, keep tapping the F8 Key.
From the menu that will be displayed, out of which choose Safe Mode and press Enter.
Run HijackThis and click Do only a System scan.
Then put a check mark infront of below listed entries:-
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://win-eto.com/hp.htm?id=533
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://win-eto.com/hp.htm?id=533
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Linkit
O4 - HKLM\..\Run: [System Redirect] C:\WINDOWS\System32\sysbho.exe
O4 - HKLM\..\Run: [PSGuard] C:\Program Files\PSGuard\PSGuard.exe
O16 - DPF: {15AD6789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://static.windupdates.com/cab/MediaAccessVerisign/ie/bridge-c5.cab
O20 - AppInit_DLLs: sysmain.dll
O21 - SSODL: MSSQLMonitor - {B58AFF20-AB0D-47D7-B179-960B6509E245} - C:\WINDOWS\System32\amstxml4.dll
Close all other open programs except Hijackthis and click the button Fix Checked in HijackThis.
Delete these files:-
C:\WINDOWS\System32\sysbho.exe
C:\WINDOWS\System32\OLEEXT.dll
C:\WINDOWS\System32\sysbho.exe
C:\WINDOWS\System32\amstxml4.dll
Delete this folder:-
C:\Program Files\PSGuard
Go to Start > Search. Here click "All files and folders" in the left pane. Next, click on "More advanced options". Here select the options "Search system folders", "Search hidden files and folders" and "Search subfolders". Next, type/copy the below mentioned filename and search for it, if you find it, right-click on it and click delete:-
sysmain.dll
Run CCleaner, click "Options" button and here go to "Advanced" tab and uncheck the option "Only delete files in Windows Temp folder older than 48 hours". Click OK to exit from the Options. Finally click "Run Cleaner" and click "OK" to continue cleaning.
After this, run AdAware, and click the "Start" button (in AdAware) and select the options "Perform full system scan", "Scan for neglible risk entries", and click "Next" to start the scan. When the scan is completed, remove all the things it may find.
Reboot to Normal Mode. Run HijackThis again, click Do a System scan and save log, and post the fresh log.