The Source

Runtime Error - An error that occurs during the execution of a program.
ActiveX Error - An error caused by certain browser settings and misconfigured system files.
DLL Error - Missing or corrupt .dll files often occur when removing or installing a program.
.exe Error - Often occur during system or program start up due to unneeded files in the Windows registry.
General Protection Fault - Occurs when a program that is running violates the hardware rules in some way.
Blue Screen of Death - Occurs when Windows cannot recover from a system error.  Usually requires a reboot.
Windows Explorer Error - A dirty registry may cause Windows Explorer to get stuck in a loop.
iExplore or iExplorer Error - An error related to  your Internet Explorer browser often causing it to shut down.
Access Violation - An error that occurs when an application tries to access storage not designated for it.
System32 Error - An error often caused by missing or corrupt system files.
Windows Installer Error - Caused by 3rd party "shell extensions" resulting in a white screen and/or crash.