I have been using my current computer and network setup for over 2 years and last month I started experiencing limited connectivity. To try fix this I talked to Comcast, Dell, Intel, and Cisco. After talking to all of them, I was able to get an internet connection, but in order to do this I have to force my connection link speed down to 10 megabits/second. Before I had this issue, my computer, a Dell XPS 435MT, was connecting at 100 megabits/second. I have tried everything I can find on any of the forums but none of it has worked to get my computer to connect at autonegotiation speeds. At the time that I lost connectivity I was using a Linksys WRT54G router with Cat 5e Ethernet cables. Since then I have switched to a Linksys E3000 router and changed all of my Ethernet cables to see if that was the problem. My computer will not connect even if I connect directly to the cable modem with a single Ethernet cable, but if I connect my laptop, also running Vista, it will connect just fine. These are my system specs: OS Name Microsoft® Windows Vista™ Home Premium Version 6.0.6002 Service Pack 2 Build 6002 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name CAMERON-PC System Manufacturer Dell Inc. System Model Studio XPS 435MT System Type x64-based PC Processor Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz, 2668 Mhz, 4 Core(s), 8 Logical Processor(s) BIOS Version/Date Dell Inc. 1.0.2, 11/14/2008 SMBIOS Version 2.5 Windows Directory C:\Windows My network card is: Intel(R) 82567LF-2 Gigabit Network Connection Name [00000004] Intel(R) 82567LF-2 Gigabit Network Connection Adapter Type Ethernet 802.3 Product Type Intel(R) 82567LF-2 Gigabit Network Connection Installed Yes PNP Device ID PCI\VEN_8086&DEV_10CD&SUBSYS_02C91028&REV_00\3&11583659&0&C8 Last Reset 5/12/2011 3:20 PM Index 4 Service Name e1yexpress IP Address 192.168.1.136, fe80::3023:10e4:5dbf:3a03, 2002:62e1:3856:0:b9ae:7c18:faed:8fa3, 2002:62e1:3856:0:3023:10e4:5dbf:3a03 IP Subnet 255.255.255.0, 64, 128, 64 Default IP Gateway 192.168.1.1, fe80::c2c1:c0ff:fe13:811f DHCP Enabled Yes DHCP Server 192.168.1.1 DHCP Lease Expires 5/16/2011 8:28 PM DHCP Lease Obtained 5/15/2011 8:28 PM MAC Address 00:21:9B:1B:9C:1B Memory Address 0xFBCC0000-0xFBCDFFFF Memory Address 0xFBCF4000-0xFBCF4FFF IRQ Channel IRQ 4294967290 Driver c:\windows\system32\drivers\e1y60x64.sys (10.1.9.0, 303.20 KB (310,472 bytes), 4/7/2010 3:59 PM) Please help me fix this. These are my specs when my link speed is forced to 10 megabits/second. if you need my specs for it when it is not connected let me know.

did you talk to your ISP? it seems they changed the maximum connection speed from their end.Tunde Abagun MCP,MCSA,MCTS,MCITP en p "for the love of Computers"

I called my ISP, Comcast, first, but when I talked to them they told me that I had to call Intel because they thought it was my NIC. Intel then told me that they couldn't help me unless I called Dell first. Then Dell told me that I would have to pay them $59 just to have them attempt to diagnose my problem without any guarantee of them being able to do anything. So I don't think that the problem came from the ISP limiting my connection speed.

Uninstall your network adaptor in your device manager (do not check uninstall drivers) then under Action, scan for hardware changes. This will redetect the drivers for your network card. You can also download the drivers from Dell under your service tag number. If that doesn't solve the problem I would replace the network adaptor. It seems you have eliminated most other possibilities.

I have already unistalled the network adapter and reinstalled it and installed the latest drivers for it. Thank you, I have just been reluctant to spend money to fix it if I could help it. That is the same idea I came to about the problem but I wasn't sure.

You have eliminated the router, drivers are not the problem. A replacement NIC is very reasonable and will not cost you nearly what a session with Dell would cost.

Do you have any recommendations on which NIC to get for my system?