Question about Dell Inspiron 6400 Notebook

2 Answers

Vista to XP downgrade

I got this Dell laptop loaded with MS Vista. My company's softphone software doesn't work with Vista so I had to do a clean install of XP Pro. Everything worked fine except the drivers for everything will not work. I went to the Dell site and DL'ed the correct drivers I needed, installed them in the laptop and nothing. The drivers say they install correctly and all that but they still don't work. Does anyone know if Dell does something to the bios? Or if there is a problem to that extent? Anyone who knows anything about Vista and this problem please help me out. Thanks a lot.

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 13 Answers
Re: Vista to XP downgrade

As far as my knowledge concern all windows product have backward compitibility soo if vista is working fine that mean your laptop is compitible with xp pro. there must be some installation issue other wise everything is fine.

try this at command prompt ' DriverQuery /v ' . you may get some idea.

for more vista troubleshooting and guide visit this vista tips blog.

Posted on Apr 19, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 624 Answers
Re: Vista to XP downgrade

If you did a clean install of Windows XP Vista has nothing to do with this problem. I infrequently have problems with Dell drivers not working but when I do its because I've installed the wrong ones. I have gone down the wrong troubleshooting path several times because the driver said it installed correctly..... I noticed that when you go to the Inspiron 6400/E1505 download page ( you have the choice of selecting drivers from lots of OS versions including both 32 or 64 bit versions of XP. I would verify that you have the write driver versions and try again. Another alternative is using the drivers and tools CD that typically comes with a Dell. You can run that and it should have XP drivers. If you don't have the disk you can also try getting the network card running, connect to the Dell site and running their driver ID wizard to ID the drivers you need. Let us know if you have any other questions and please don?t forget to rate this post.

Posted on Feb 21, 2007

1 Suggested Answer

  • 13 Answers

SOURCE: missing hd audio codec

Hi, I was searching for this driver on the Internet and it seems to be your lucky day, here I found the IDT drivers for Audio, for Windows XP for the Studio XPS 1640, now because this computer was designed for Windows Vista, Dell will not be responsible for the use of this driver, nor any future damage that it might cause, not that I've seen the case, but Online forums state that this driver is 100% working with no issues, if you happen to have one, please let me know, the link is a rapidshare download server, just follow the instruction on the free user and go ahead. Regards. P.S. Here are the Dell Drivers for Vista, in case when Windows 7 comes out you want to just do the upgrade option with vista, and it should solve everyones issues.

Posted on May 03, 2009

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Hay! my laptop is toshiba satellite A135 s4527 home vista. but i run my laptop with oprating system windows XP2. how it possible. please help me

Hello and welcome to fixya.

In your case, im assuming you refer to the "Vista sticker" that is on the laptop. If a computer is vista-compatible this doesn't mean that it is not able to run older Operating Systems (such as Windows XP SP2) as well.

The sticker on the laptop just referes to the type of Operating System that came pre-installed with it. Now if you bought the laptop and asked your salesman for a DOWNGRADE TO XP Operating System or if this is what he understood then it will probably come with Windows XP instead of Vista Home.

This also applies if you are working for a company in which case the company's IT Department will decide what type of Operating System is to be installed on this computer.

Overall: Newer computers/laptop models that support Windows Vista can also run Windows XP

ALSO: Check for the OEM sticker in the back of the laptop or bottom (it looks like THIS for XP or THIS for windows vista Home Premium). This determines whether you can use a vista DVD to upgrade your computer later from XP to Vista.

If you have any more questions just let me know.


Regards from

Apr 13, 2011 | PC Laptops

1 Answer

How can I do to install Win XP instead the Win Vista default installer on this computer??? Downgrade... Do I need special tools, sata drivers or something special to do the job..????

Do you have a valid XP license and media? To load an O/S you don't need tools, just software.

However, before you load the new O/S, ensure that you backup all your data from your Vista laptop.

Once you insert the media, it will guide you. I recommend reformatting the hard drive and then install the XP O/S.

I also advise you to go to the laptop mfg website and download all the drivers for XP available for your particular model and put them on a thumbdrive, you willl need them after installing XP.

After installation, check your drivers to see what is needed, more importantly the LAN driver may require an update in order for you to get on the internet.

Once you are online, you can begin to download all the patches and security updates from MS.

Good luck


Jan 05, 2010 | Dell Vostro A860 Notebook

2 Answers

I have a Dell-Inspiron Laptop 1526 I had my hard drive replace by Dell once this year already, when I turn on the computer it starts to work and then stop Running Vista my warranty was up Sept 3 2009 like...

Your trying to downgrade this means you have to use vista cd to format the hard driver, and after the laptop restart, load the Xp. Also sometimes this code comes if you donot use the original xp windows.

Thanks for using Fixy

Oct 12, 2009 | Dell Inspiron 1150 Notebook

1 Answer

Bluetooth Icon disappered after downgrading from VISTA -->XP

the bluetooth light you see is associated with both wireless (WiFi) and Bluetooth radios being on or off.  This does not mean you have the bluetooth software installed. You'll need to go to and choose your system (or type your service tag when requested) and download the drivers for your bluetooth.

Furthermore, make sure you have Windows XP with Service Pak 2 or higher installed before installing any bluetooth software. :)

Jun 29, 2009 | Dell Inspiron E1405 Notebook

1 Answer

I want to have xp on my vista gateway laptop

Hello, Its really hard to downgrade from vista to XP on dell laptops. vista and XP use completely different drivers and dell has stopped writing drivers for XP. But still you can downgrade. You need to setup external SATA harddrive from where your XP CD should boot as it wont boot from your current harddrive that has vista. Even if you set these up and downgrade, Since dell has stopped writing drivers your new XP will not work with many new softwares and applications as you wont have drivers for them. I would advice you to use Vista. Good luck, Please rate the solution. ~regards, Jegan

Jun 03, 2009 | Gateway MX6710 Mobile Entertainment...

2 Answers

Hi, I hold a Compaq c740tu notebooke PC with the pre installed windows vista. I face problems on running certain softwares and hence would like to downgrade to Windows XP. I managed to get almost all...

Yes do not downgrade or you Will have problems. Microsoft is planning to stop support for xp in the future and already have a new OS-7 coming out to replace vista. A lot of software that does not say it is for xp will work on vista. Just because it does not say for vista does not mean it will not work on vista. Good Luck. I love Xp too but I will not downgrade to go back because microsoft is only going to make it obsolete in the future.
please rate my thank You.

Jan 16, 2009 | Compaq Presario Notebook

1 Answer

My laptop vistro 6700 has vist software inbilt but i need to install xp software when i tried to install it is saying that your hard disk cant found . sata settings was not found in my laptop so what can i...

Windows Vista will not allow you to install Windows XP software over it. Microsoft has programmed it to not allow anyone to downgrade, basically because there are so many problems with Vista that they would lose money if everyone downgraded. So the only way to load Windows XP is to find you some software that will wipe your hard drive clean. You should be able to do it with the "fdisk" command at the DOS prompt. But beware; this will compeltely delete everything off of your drive. So back up any files that you need. Then you can load Windows XP.
Don't forget to rate this solution with 4 stars before logging out.

Jan 11, 2009 | Compaq Presario 700 470024-192 Notebook

1 Answer

Crystal eye webcam

did you downgrade from vista
the cam will need to be setup with yahoo and msn
if your having problems installing the cam then try
some vista programs will not work with xp and the same with some xp programs will not work with vista
so let me know if cam is downloaded and you just need setup on msn and yahoo

Dec 06, 2008 | Acer Aspire 5520-5908 Notebook

1 Answer

Lost audio drivers

you can downgrade, of course. your computer maker MAY decide that with a downgrade, that your registration for your computer may be null and void

May 03, 2008 | HP Pavilion dv2000t 14.1" Notebook Laptop...

22 Answers

Xp Drivers for Dell Inspiron Laptop 1525

Dear Sir, Have Dell laptop Inspiron 1525 with Vista loaded....but I need Win XP-2 OS on it...CD of which I have but don't have the laptop drivers compatible with XP. Can you pls guide me how & where to find these drivers....Dell does'nt have those drivers anymore (outdated) Pls...

Apr 04, 2008 | PC Laptops

Not finding what you are looking for?
Dell Inspiron 6400 Notebook Logo

Related Topics:

612 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell PC Laptops Experts


Level 3 Expert

1038 Answers

Sudeep Chatterjee
Sudeep Chatterjee

Level 3 Expert

3267 Answers

Donna Sander

Level 2 Expert

193 Answers

Are you a Dell PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides