System Diagnostic is another virus designed by the same scammers who invented Windows Diagnostic malware. These scareware tools have almost no differences between each other, so they both will display the same alerts reporting only fake viruses and then pushing user into purchasing the ‘license’. System Diagnostic spreads through the use of backdoor Trojans that mostly come after finding some system splits and different kinds of vulnerabilities. Additionally, intrusion mostly stays undetected but after some time users start getting notifications from this scam. That means that everytime you reboot your computer you will be interrupted with numerous alerts telling about hundreds of Trojans, worms and other spyware. Please, keep in mind that you should ignore these alerts displayed by System Diagnostic and also remove the same malware because it won’t stop interrupting you:

Windows detected a hard drive problem.
A hard drive error occurred while starting the application.

Ram Temperature is 83 C. Optimization is required for normal operation.

System Diagnostic gets on users’ nerves as soon as it manages to get inside the system. However, it can be easily stopped with a help of reputable anti-spyware which has been updated, so think about licensed Spyware Doctor’s version. If simply ignored, this fake anti-spyware will start misleading activity pursuing o scare and frighten you and get your money additionally. This is done after users are tricked into purchasing ‘licensed’ System Diagnostic version described to be capable enough of removing numerous infected files found on the PC. Please, don’t fall into this brainwashing campaign and remove System Diagnostic.

Consequently, you will have to overcome problems of reaching security websites. Malware is also known to let more viruses inside the system will start redirections and more warnings. So, use the manual removal guide written below and uninstall System Diagnostic. It’s highly recommended using legitimate spyware removal tool to fasten this process.