On my new HP Pavilion desktop running Win 7 64, the network adapter is stuck on 10M. When I first noticed the network was slow I manually changed the speed to 100M Full Duplex. This worked for a while until I had to re-boot my router. The adapter is not stuck on 10M and nothing I've done changes this. I have set the speed manually, set it to auto, re-booted the PC, re-booted the router, tried to update the driver (it says it's up to date), re-installed the apdapter etc. and nothing works. Router is a Linksys WRT54G and the network adapter is a Realtek RLL 8105E. I cannot find any updated drivers on the HP site, Linksys site or the Realtek site for anything remotely connected to the network adapter. I know the router is good and the cable is good - my old PC used exactly the same port and cable and auto-switched to 100M with no problem (old Compaq box running XP) Any thoughts ?

Hi, Since you changed the speed and duplex manually, I suspect that some third party software changed the value. Please perform a Clean Boot to check the issue. And use 50-50 method to find out the root cause: http://support.microsoft.com/kb/929135 Note: Clean Boot is a step of troubleshooting, we can go back to normal by running MSCONIFG. Please post the result here.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.