DLL are dynamic link libraries. It contains some function that some system program uses them frequently. You can face DLL errors for a shared DLL is overwritten or deleted, malfunctioning of hardware and software, corrupted application, malware infections and registry problems. To prevent this type of errors you have to keep DLL files, do not remove shared DLL files during uninstalling any program.
Stop errors can occur during system setup, startup or when the PC is operational. It can happen any time. But there are some reasons for this; such as faulty a device driver, a faulty RAM chip or damaged hard disk, incompatible system BIOS, overheating of hardware components, such as CPU, overused system resources, damaged system files. To prevent this type of errors ensure that all hardware installed on your PC is in proper working condition. And you must install correct software and BIOS updates to obsolete files.
Virtual Device Drivers errors are known as Vxd errors. These errors happen when there are some internal device errors inside the system. Some reasons are given, incompatible versions of VxD files on the system, faulty hardware device, memory conflicts, errors within the Plug and Play feature, faulty motherboard etc. To prevent this type of errors one way to find out the source of the problem is to start your PC in Safe Mode and check the Event Viewer from Administrative Tools Control Panel option. From Event Viewer, you will get a detailed report of the module that might be generating the VxD error on your system.
Active X is working as component of some application like Internet Explorer. These types of errors can occur in many reasons. Try to setup configuration of your browser correctly, configure your anti-virus program as your preferable setting, update anti-virus regularly. Install a firewall to block malicious ActiveX controls from infiltrating your PC and network, and this is much important.
User can user registry cleaner to prevent these types of errors automatically. User can download them in cheap rate. Then start that programs and full check on that system can useful. It will display a report on errors. If user wants to fix them, he has to do nothing, but click on fix button. Use them regularly to scan, detect and remove unwanted information from your PC and thus maintain an error-free PC.