Issues with eSignal and Windows 7
To use eSignal / QCharts in Windows 7 the software vendor states that there are a few settings such as the Windows 7 Firewall and User Account Control (UAC) that must first be configured in order for all the QCharts components to properly function.
This involves running eSignal / QCharts and the Data Manager in Windows XP Compatibility mode. See below for how to fix it.
Problems like this often ‘appear’ to be a computer problem when in fact they are not. To rule it out, close your trading application and see if you still have a problem. Open any other program except your trading application or utilities used by your trading application.
Usually you will find that everything works fine until your trading application is opened. This means that if you only have an issue when the trading application is open, it is NOT the computer it is your application.