Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Win 7 / XP on Separate HDD... No LAN connectivity

11 Oct 2009   #1

Windows 7 (x64), Windows XP (x86), Backtrack 3
Win 7 / XP on Separate HDD... No LAN connectivity

Here's the situation:

Computer --> Modem --> Wonderful Internet

I originally had Windows XP Home (x86) on one HDD. I installed Windows 7 (x64) onto a separate HDD so that they wouldn't share the same MBR. So, in order to switch between them, I have to go into my BIOS and manually switch which HDD the system will boot to first.

My XP HDD seems to have absolutely no problem connecting to the Internet. I never have a problem.

However, when I switch to run the Windows 7 HDD, I seem to be having a problem with my DHCP server. When i run ipconfig /all from the command line, it's showing an address of - which would be an APIPA address.

IP Address:
Default Gateway:

I can't even run the /renew command.
I can ping the IP, so I know that my NIC is working properly.
The drivers on my NIC are up to date.

If you need anymore info, please feel free to ask.

Does anyone have a clue as to what I might be able to do to resolve this situation? I would really appreciate some input on this one.

My System SpecsSystem Spec
12 Oct 2009   #2

7600.20510 x86

First, you should set up a proper dual boot. Boot into Win 7 and use bcdedit to add the XP home as a boot choice and save. You may have to first assign a drive letter to your XP partition from within 7 if you haven't done so already.

Now when you boot up, you will be presented a choice for which OS you want, provided you added the XP correctly. This is if you leave your bios boot to the 7 drive.

If after doing this, you boot to the XP drive, it will only load XP with no choices.

Now as far as your connection is concerned in Win 7. Disable IPv6 if you do not plan on using the Homegroup feature and do plan on sharing with the classic Windows' method. If you do disable IPv6, also disable the IP Helper service.

Set a manual ip for the nic.

IP = same as router config page, only changing the last part to any number between 1-255 that isn't being used by any devices.

Subnet mask =

Default gateway = router's config page ip address. Usually or

DNS Server = same as gateway

Scan your system with Malwarebytes to ensure it is clear of any funk. Also make sure the mdnsresponder.exe is not in task manager and the Bonjour service is not installed on your machine. You do not want Bonjour lol. Check in services and in program files.

You could either temporarily or permanently disable the DNS Client service.

Open you hosts file and make sure nothing weird is going on there.

C:\windows\system32\drivers\etc\hosts, <That's for x86. Not sure about x64.
My System SpecsSystem Spec
12 Oct 2009   #3

Windows 7 (x64), Windows XP (x86), Backtrack 3

Thank you for the reply.

Well, since I don't have a router, I'm not entirely sure what I would need to put as my IP address or the default gateway. Would I need to contact my ISP? I have scanned both my drives with Malwarebyte's and my current AV (NOD32). They both come up clean, so I'm sure it's not a malware issue.

If I remember correctly, the way you're telling me to set the OS's up is by putting them on the same MBR. I don't want that should one of them fail. Now, if that's my only option, well then I guess I have no choice.

I have disabled IPv6. Should I try renewing the ipconfig by 'running as administrator'? I've been doing some research, and I've noticed that in order to run things like that, you do have to run it as an admin. Windows won't set the main user as an admin.

Again, thanks for the help.
My System SpecsSystem Spec

12 Oct 2009   #4

7600.20510 x86

You're welcome.

No, having the dual boot will not harm the other OS should one of the disks fail. If 7 disk fails, you can boot to XP as always previously by changing bios first boot. If XP disk fails, choosing XP at the startup screen will fail. 7 will not. You could then choose to figure out how to fix your XP or remove it from the boot menu using EasyBCD, should that ever happen.

Basically means that a dual boot menu will not "tie" the OSes together where they're codependent.

To attempt to fix your network problem:

Boot into XP. From command prompt, do

ipconfig, then hit enter. Write down the info there and use it to create a static ip address under IPv4 for Win 7. Make the preferred dns the same as default gateway.

Running as admin or using an elevated command prompt is always a good idea when trying to tweak or adjust settings.
My System SpecsSystem Spec
12 Oct 2009   #5

Windows 7 (x64), Windows XP (x86), Backtrack 3

Hey torrent,

So I did what you said and set my static IP to what my XP settings were... still nothing. I even tried to set the preferred DNS the same as what it was in XP. I ran as both the system admin and under my user name.

I did notice that my DHCP services were turned off. Is there a way in 7 to turn them back on? Or is that overridden when you set up a static IP?

Thanks again. I guess if this doesn't work, I'll just get rid of my XP HDD. Time to move on anyways. My RTM version should be here within a week or so.
My System SpecsSystem Spec
12 Oct 2009   #6

7600.20510 x86

In start menu search box, type services.msc, hit enter. Go to DHCP client and make sure it is set to automatic. Also, start it up if it's stopped.

This setting is completely independent from setting a static (permanent) or dynamic (changing) ip.
My System SpecsSystem Spec
12 Oct 2009   #7

Windows 7 (x64), Windows XP (x86), Backtrack 3

So, I ran services.msc and this is what it said:
Both my DNS client and DHCP Client are running, but according to the ipconfig command, DHCP isn't... Well, atleast is says that DHCP is not enabled.

Attached Thumbnails
Win 7 / XP on Separate HDD... No LAN connectivity-win7issues.png  
My System SpecsSystem Spec
13 Oct 2009   #8

Windows 7 Home Premium x64

It sounds to me like you are having the same problem I am. There's alot of people having this issue. I hope this can be resolved.
My System SpecsSystem Spec
13 Oct 2009   #9

7600.20510 x86

I'm not completely sure, but I think DHCP enabled saying no means that your router (or since you don't have one, ISP or modem) does not have DHCP enabled. On my router, I specifically disable the DHCP server and I have that command saying no too.

Perhaps this is a driver issue. A driver found elsewhere like on your motherboard manufacturer's site or even from a different manufacturer that uses the same exact network device as yours, may work.

You can start with trying this if you'd like:

Considering the page has a flashing "compatible with Windows 7" advertisement on it, it really should be the fix I think. Good luck.
My System SpecsSystem Spec
13 Oct 2009   #10

Windows 7 (x64), Windows XP (x86), Backtrack 3

Well... my MB just died, so I guess I'll have to figure it out later. Thanks agaiun for all the help. I just got the EVGA 790i FTW MB... so I'll work on 7 later.
My System SpecsSystem Spec

 Win 7 / XP on Separate HDD... No LAN connectivity

Thread Tools

Similar help and support threads
Thread Forum
How to set up three separate networks?
I have a duplex for rent. Duplex plus the main house would have a total of three networks. I would like to separate these three networks so people cannot peep into other people's data. What is the best way to do it and what is the most economical way of doing it? The house has ADSL. So, I am...
Network & Sharing
Internet connectivity problems with 2 separate networks.
Hello, I just got my hands on a new Alienware M18xR2 laptop computer. So far, I have had nothing but great things to say about it. Only one problem has surfaced since I bought it. The problem being internet connectivity with two different networks. At the house I first booted it up, I get a...
Network & Sharing
How to dual boot Two separate harddrives, 2 separate operating systems
I have got two separate hard drives one running win7 one running xp. I need to be able to chose which os to run but currently I can only do so by pressing F12. I have tried EasyBCD but it wont work - does anyone know how I can do this? To clarify what I really want is a list of the two os to come...
Installation & Setup
W7 on separate SSD
Hi All, New to this forum, sorry I didn't find alot sooner :) I am waiting for my new 128 SSD and Windows 7. I currently have Vista on my Hard dirve. I would like to make the W7/SSD the new boot drive and just use the Vista HDD for storage. Need some help on setting this up. Thanks...
Installation & Setup
WMP - Can I separate my library into New & Old?
I have things I want to keep in the library, and I download news hourly & another half dozen things every day. I don't like having to wade through the things I'm keeping to get to the new items. My old version (with XP in'07) put everything in Recently Added, and then a few weeks later things...
Music, Pictures & Video

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 19:05.
Twitter Facebook Google+