The process file cdr4_2k.sys is a minute software program that permits the communication between the hardware and connected devices to the computer by having a direct access to the internals of the hardware and operating system. The process file is a Windows CD ROM driver and is identified to be as CDR4_2k CDR Helper that is part of the software Roxio’s CD-R Helper Drivers, Direct CD or Adaptec’s CD-R Helper Drivers as created by the Company Roxio or Adaptec. The process file cdr4_2k.sys is required by Easy CD/DVD Creator up to version 6 but not part of v7+. It has several features that include that of being a compressed file and a signed file, where the issuer of the certificate is from Verisign Time Stamping Services Signer and the signer of the certificate by Sonic Solutions. The process file is not considered as a Windows core file nor is it a visible window. It is found to be located in the folder C:\Windows\System 32\drivers with a size on Windows 7/XP at 52,720 bytes (25% of all occurrences), 52,624 bytes, 53,072 bytes, 52,464 bytes or 58,000 bytes. It can end and start from Services by other programs or in the control panel.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. cdr4_2k.sys. is used by CDR4_2k CDR Helper, If you shut down cdr4_2k.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop cdr4_2k.sys, permanently you need to uninstall the application that runs this process which in this case is CDR4_2k CDR Helper, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed cdr4_2k.sys

A process usually a part of an installed application such as CDR4_2k CDR Helper, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if cdr4_2k.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that cdr4_2k.sys, belongs to, in this case CDR4_2k CDR Helper