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I'm running Win 7 64 bit all has been great until recently. I'm unable to access internet or see other devices on my LAN (ie printers other devices). I get an error message 651, I have ethernet to router to modem and get to the internet via Comcast.
Other pcs/laptops on LAN have internet access, no problems.
Did the Chkdsk - no problems
Ran Microsoft Security Essentials full virus scan- no problems
Did a restore to a prior date (5/23/2010 - no change
Downloaded the raspppoe.sys file onto my laptop - burned a cd and installed on the PC
Renamed the old file to raspppoe_orig.sys - did a restart - no change
Checked all ethernet cables/connections - no change
I welcome any insight into solving this riddle, as business is closed until I can get back on line. Thanks much.
Disable your antivirus and other security software if you have installed and check as this can interfere with the connection.
Do you have Microsoft Virtual PC installed?
Many users facing the same issue seems to have fixed it by disabling/uninstalling the above. For test purpose you may disable the above feature temporarily and see if there’s any noticeable change.
Disable IPv6 for your connection
1. Go to Control Panel > All Control Panel Items > Network & Sharing Center > Change adapter settings (in the left pane).
2. Right-click on the connection you‘re using > Properties > Networking Tab.
3. Now remove the tick from the IPv6 box.
4. If it makes no difference, it is completely reversible by ticking the box.
Note: Ensure to enable your antivirus back. Also ensure that you enable the Virtual PC back if it’s not causing the problem.
Try updating the drivers for your modem and check if it helps, go to manufacturer’s website download and try installing it and check.
Here’s a complete list of error codes that you may receive while making dial-up connection.