
By Jim
Updated on Friday, December 17th, 2010
Making sure your hard drive in tip-top shape is one of the best ways to keep your PC running smoothly. You can do this through a variety of means, but the best way is to use a system optimization tool to do regular maintenance on your hard drive – regular defragging, scans, and others.
However, there’s been a worrying trend among malware programs lately. Their programmers have designed rogue pieces of software that look and act like legitimate system optimization tools. An example of this trend is the app called Hard Drive Diagnostic.
Like other programs like HDD Scan and Ultra Defragger, Hard Drive Diagnostic is a fake system optimization tool. It usually enters your system with the help of Trojans and installs itself without your knowledge. The only warning you’ll have that it is on your system is that it will send out alerts and popups informing you of supposed problems with your system. The usual errors are about bad disk sectors or problems with your hard drive – very scary things for lay computer users.
The program intends to scare you into buying its full version – which it claims will solve all your problem. The thing is, the “full version” is usually very expensive. It’s all a scam and don’t let yourself be fooled by it. Get rid of this program as quickly as possible. To learn what you need to do, read on.

- Download Spyware Doctor and save to your Desktop (if you cannot download then bookmark this page and skip to Step 3 to restore your internet)
- Rename the file iexplorer.exe
- Restart your Computer in Safe Mode with Networking (keep tapping F8 while your system boots up)
- Launch Internet Explorer, click on Tools and then Internet Options.
- Click on the Connections tab and select LAN Options
- Uncheck the box Use a Proxy Server For Your LAN and click OK
- Launch iexplorer.exe (Spyware Doctor)
- Update Malware Definitions and click Start Scan
- Click the Fix Checked button and remove Hard Drive Diagnostic
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Symptoms Of Infection
- Your computer is acting slow. Hard Drive Diagnostic slows down your system significantly. This includes starting up, shutting down, playing games, and surfing the web.
- You are getting pestered with pop ups. Hard Drive Diagnostic infects your registry and uses it to launch annoying pop up ads out of nowhere.
- Searches are redirected or your homepage and desktop are settings are changed. This is a symptom of a very serious Hard Drive Diagnostic infection.
Dangers Of Infection
Viruses like Hard Drive Diagnostic will infect your registry and other important system files. If the infection is not treated it can cause a complete collapse of your system.
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Some Hard Drive Diagnostic infections contain spyware and keyloggers which can be used to record sensitive data like passwords, credit card, bank account, and social security numbers. The longer you allow the infection to fester, the greater the chance of identity fraud.
How To Remove Infection Manually
Uninstall Hard Drive Diagnostic Processes
Delete Hard Drive Diagnostic Files
%Temp%\[random].exe
%Temp%\[random].dll
%Temp%\dfrg
%Temp%\dfrgr
%Documents and Settings%\[User_Name]\Desktop\HDD Scan.lnk
%Documents and Settings%\[User_Name]\Start Menu\Programs\HDD Scan
%Documents and Settings%\[User_Name]\Start Menu\Programs\HDD Scan\HDD Scan.lnk
%Documents and Settings%\[User_Name]\Start Menu\Programs\Win Defragmenter\Uninstall HDD Scan.lnk
Remove Hard Drive Diagnostic Registry Files
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run “”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments “SaveZoneInformation” = “1″
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Warning! If Spyware Doctor is blocked by the virus then run your system in safe mode and try again. To do this reboot your system and tap F8 repeatedly as your computer starts up. Then run Spyware Doctor as normal. If this doesn’t work try renaming the Spyware Doctor EXE file.
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