Operation Manual

115
PROBLEM:
When trying to encrypt the system partition/drive, during the pretest, the VeraCrypt Boot
Loader always reports that the pre-boot authentication password I entered is incorrect (even
though I'm sure it is correct).
POSSIBLE CAUSES:
 Different state of the Num Lock and/or Caps Lock key
 Data corruption
POSSIBLE SOLUTION:
1. When you set a pre-boot authentication password, remember whether the Num Lock
and Caps Lock keys are on or off (depending on the manufacturer, the keys may have
different labels, such as Num LK). Note: You can change the state of each of the keys
as desired before you set the password, but you need to remember the states.
2. When you enter the password in the VeraCrypt Boot Loader screen, make sure the state
of each of the keys is the same as when you set the password.
Note: For other possible solutions to this problem, see the other sections of this chapter.
PROBLEM:
When the system partition/drive is encrypted, the operating system ‘freezes’ for approx. 10-60
seconds every 5-60 minutes (100% CPU usage may co-occur).
PROBABLE CAUSE:
A CPU and/or motherboard issue.
POSSIBLE SOLUTIONS:
 Try upgrading the BIOS.
 Try disabling all power-saving-related features (including any special CPU enhanced
halt functions) in the BIOS settings and in the ‘Power Options’ Windows control panel.
 Replace the processor with a different one (different type and/or brand).
 Replace the motherboard with a different one (different type and/or brand).
PROBLEM:
On Windows 7/Vista (and possibly later versions), the Microsoft Windows Backup tool cannot be
used to backup data to a non-system VeraCrypt Volume.
CAUSE:
A bug in the Windows Backup tool.
POSSIBLE SOLUTION: