Did you know you can use the Task Manager for more than closing unresponsive programs? If you're running short on system ...

Use the Task Manager for quick RAM checks and the Resource Monitor for a detailed analysis to find out which applications are using the most memory. Adjust application priorities in Task Manager, use ...

Program memory typically refers to flash memory when it is used to hold the program (instructions). Program memory may also refer to a hard drive or solid state drive (SSD). Contrast with data memory.

I don't know why you'd be getting that error, unless the self extracing archives happen to be 16-bit executables. Try right clicking the files with WinRAR installed and see if you can just extract ...