User`s guide

same time. For more information, please refer to “Minimum system requirements”
(p. 3).
● There are too many invalid registry keys left in your Windows Registry.
Cleaning the Windows Registry can improve the performance of your system. For
more information, please refer to “Cleaning Windows registry” (p. 145).
● Your hard disk drives are too fragmented.
File fragmentation slows down file access and decreases system performance.
Running the Disk Defragmenter can improve the performance of your system.
For more information, please refer to “Defragmenting hard disk volumes” (p. 144).
● The applications running on your system are using too many resources.
The Bitdefender Performance Monitor allows you to determine the impact of the
applications running on your system by means of CPU load, memory usage and
hard disk use.
You should be able to pinpoint the applications that are causing the system to
perform poorly, and close or monitor them. For more information, please refer to
“Performance Monitor” (p. 147).
30.2. Scan doesn't start
This type of issue can have two main causes:
● A previous Bitdefender installation which was not completely removed
or a faulty Bitdefender installation.
In this case, follow these steps:
1. Remove Bitdefender completely from the system:
a. Go to http://www.bitdefender.com/uninstall and download the uninstall tool
on your computer.
b. Run the uninstall tool using administrator privileges.
c. Restart your computer.
2. Reinstall Bitdefender on the system.
● Bitdefender is not the only security solution installed on your system.
In this case, follow these steps:
1. Remove the other security solution. For more information, please refer to “How
do I remove other security solutions?” (p. 62).
2. Remove Bitdefender completely from the system:
a. Go to http://www.bitdefender.com/uninstall and download the uninstall tool
on your computer.
Solving common issues
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Bitdefender Total Security 2013