Error 651 on Windows 7


Click here to scan and fix Error 651

Error 651 is an error code that alerts one to the fact that the modem, or networking device, is unable to connect. Connection problems can occur for several reasons but most of them can be solved by running Windows’ network troubleshooter to attempt to find the problem and possible solutions. While this error and code occur in all versions of Windows, it appears that it occurs most frequently, if not recently, in the Windows 7 Operating System. There seem to be a few known causes for Error 651 in Windows 7, along with specific possible solutions for this operating system.

  • Step 1: Download and Run/Save the Error Repair Tool
  • Step 2: Next, click the SCAN button.
  • Step 3: Click the REPAIR button to fix your errors.

The PPPoE connections may be causing the error and adjusting them may remedy the issue. The RAS PPPoE driver file is named ‘raspppoe.sys’ and found in the ‘c:windowssystem32drivers’ folder. Rename the RAS PPPoE driver file to something to the effect of ‘raspppoe_old.sys’. Finally, copy a working PPPoE driver file from a Windows Vista system into the ‘c:windowssystem32drivers’ folder. There are many who attest that this procedure solved the problem for them; and there are others who say that it had no effect on their ability to connect, some said it caused another error code to appear.

If that does not work, try checking the status of the network adapter in the device manager and make sure that it is not disabled.

Disabling IPv6 for the connection may do the trick. In the Network & Sharing center, change adapter settings and, under the ‘connection to be used’ item , disable IPv6 on the Networking tab of the Properties menu.

Another popular possible solution is to simply uninstall the program MS virtual PC 2007 if it is present on the computer.

Any anti-virus software may interfere with connection ability; try disabling the software, and restarting the computer. Booting the computer in safe mode and attempting to connect while in this mode may let you know that the error is resulting from an interfering program and not the modem itself.