What could trigger the problem? I've had a problem on Windows 7 which is solved now! But I like to see you guy's know what was trigger the following problem: Windows 7 Ultimate installed on the following hardware: MB: MSI K8N Neo Platinum CPU: AMD Athlon 3.2 RAM: 1,5 GB HDD: 1 x 250 GB Sata II, 1 x 120 GB Maxtor IDE 133 DVD: 1 x DVD-RW Pioneer, 1 x DVD ASUS Keyboard and Mouse: connected to PS2 Ports (the Mouse with USB -> PS2 connector) 2 printer (USB) connected (Brother DCP 330C and Epson R230) external HDD 80 GB (USB) Problem: After the installation of Windows 7 and starting with the 2. full boot and after normal log on with username and password, for to access any Application etc. need to use Ctrl+Alt+Del to open the Taskmanager once and close directly again to be able to use any application! That was happens with or without installation of applications and/or update etc. etc. Tested: All hardware on different computers without any problem and same applies for the OS and software! Now let see: What you guy's think or know what was trigger the problem?