Killdisk is normally used to wipe a hard drive to a state that makes recovery of any information from it very difficult.  Your description indicates that you wiped the entire hard drive to include the operating system.  Without the operating system the computer cannot boot.  The Dell logo comes up as the BIOS performs a self test of the computer hardware, so that part is likely ok.

When did you purchase your Dimension 2400?  If it was purchased some time after July 14, 2004, you might have the Dell PC Restore program.  Evidence of this is a blue bar that appears at the top of the screen for two seconds following the self test.  If you see the bar, press CTRL and F11, releasing both before seeing a message appear below the blue bar about loading the descriptor for PBR2.

If you don't have the blue bar, you will have to restore the computer manually using the Dell Windows XP reinstallation CD and the Dell Resource CD.  Disconnect everything from the computer except the keyboard, mouse, and monitor.  Begin by booting from the CD;  there are two methods of doing this.  One is to use the one time boot menu; place the Windows installation CD in the drive, restart, the computer, press F12 during the self test, and select CD ROM drive from the menu that appears at the upper right of the screen.  You should see a message on the screen instructing you  to press any key to boot from the CD.  A second method is to restart the computer and press F2 during the self test to bring up the system setup menu.  Use the keyboard arrow keys to navigate to the boot order menu, and follow the on-screen directions to move the CD ROM drive to the top of the list.  Place the Windows installation CD into the drive, escape from setup saving changes, and again press a key when you see the message instructing you to press any key to boot from the CD.  You will need to press Enter to setup Windows.  When reaching the screen allowing you to delete and create partitions, make sure that you delete the large partition formatted as NTFS.  Choose to install Windows into the unallocated space; a partition will be automatically created and formatted before setup continues with the installation.

EDIT:  Neglected to mention that once you have Windows installed you will need to install the device drivers.  Insert the Dell Resource CD having the utilites and drivers into the CD ROM drive.  It should autorun and ask to install.  Allow it to install, select your computer model from the list on the left, and then go to the top menu and click on Drivers.  You will get a list, some of the names having a check mark to their left.  Click on these (or double click, can't remember) one at a time.  When the box comes up for the file, click Open to start the autoextractor and allow the application to install the files to the hard drive.  Once this is done you should get an install wizard asking if you want to install the driver.  Click Yes and allow the driver to install.  Many of the drivers are not critical of installation order, but you absolutely must install the Intel Chipset driver first.  Without that driver the remaining drivers may not install properly, especially the sound driver.  When the installation is finished, restart the computer and allow it to boot so that the registry will be updated.  You should perform a restart following installation of each driver.

While the rest of the drivers are not as critical of installation order, Dell recommends you follow the chipset driver with the video, network adapter, and sound drivers due to the resources required by these devices.  If you have additional drivers, install them in the order you wish.  If your installation CD is not at least Service Pack 2 you should update to that level before continuing.  I suggest using one of these files:  Service Pack 2, or Service Pack 3.  Using Service Pack 3 will leave you with fewer updates, so I recommend that one.  If you have some older applications, however, Service Pack 2 might be a better choice.  Once you have completed driver installation, install your anti-virus or internet security suite.  At this point you should connect to the Internet and get the updates for your anti-virus/internet security suite followed by the updates for Windows.  When done, install the applications of your choice.

ok, sounds good!....and i do believe i did make da purchase after that date.    ill let u no tomorrow afternoon what happens, my access to a computer now is limited.

ok, i will take my time on all this, thanks 4 everything and ill let u know..:emotion-21:

I see I didn't type fast enough.  If you don't succeed with the Dell PC Restore, I hope you see the update to my post before you try the manual install!

Good luck!

ok..........i was able 2 restore windows, wasnt too bad. but the resource cd i had a lil trouble with.   On the main page where i select my system model, it did not have it listed there, so i kept it on "All" then i clicked on Drivers tab, then i went to the drop down tool bar and clicked on Windows XP Drivers.  then, i did see where there were 4 items with check marks beside them.  i clicked on each one and it had Extract tab, so i click on extract, then unziped, then setup type was Reinstall & Upgrade, i did that for each one.  Now.....there were more that were checked off under the Controller, Modem, and Network Drivers but i didnt know if i should install the rest that had check marks beside em.   I got kinda confused about the Chipset, u stated to install that first, but i did the Drivers ones first. So far ive only did the first 4 drivers that had check marks then i stopped cause i didnt no how much more to do.

Also i have a video driver cd program that i installed its Version A09 for Windows XP, Video Intel 82845G/GL/GE/PE/GV Graph (incase u needed that! lol). had it since 2006.

i did print off your comment yesterday and it has been very helpful, i jus got all the away dwn to the resource Cd paragraph, and thats wat threw me offf.  I hope u can understand what i jus explained. 

Or.........do i even have 2 install these drivers? i was plannin on selling my comp, and i do still have all the program cds it came with, shud i jus list that drivers has 2 b installed or will it b best 2 already have em on there?

thanks

one more thing, i wsnt able 2 connect 2 tha internet, does any drivers hav anything to do with that, as far as me not installing something?  do i need to install all drivers that hav a check mark beside em? an y wasnt my model shown in the drop down list?

The only files that must be installed are labeled as drivers.  If you didn't install the chipset driver first you can have trouble with the installation of other drivers, particularly sound and modem drivers.  If all of these installed and you have no trouble using the corresponding devices, perhaps all is ok.  I would use the machine for a while, and if everything is working, I would consider the job done.

Yes, in order to connect to the internet you must have a driver for the device that connects to whatever line you use to do that.  If you have a cable modem or DSL, this is usually the Ethernet port on the rear of the computer.  For a Dimension 2400 that is a Broadcom device which gets a corresponding driver.  It is also possible to use a dial-up account, in which case you would use a modem, which also has a driver.  This is an add-on card and can be one of a few types that Dell shipped with this computer.  It is commonly a Conexant modem.

If you have already tried to install these drivers without having first installed the chipset driver, that would be a very good reason that you cannot connect.  The Resource CD runs a program to determine what devices are in the computer needing drivers; but it will not tell you in what order to install them.  If you do not install the drivers having the checkmarks you will most likely have devices that will not operate properly or will not operate at all.

EDIT:  If you didn't begin by installing the chipset driver first, don't panic.  I can usually get away by simply installing the drivers over again in the proper order, and you should try that before wiping everything and starting with a reinstallation.

u were very helpful to me, and i thank u sooooo much.  i got everything to run properly and i sold my comp 2day.  shud b gettin my laptop soon, dont no what kind yet.   Ur Awesume....:emotion-5:

You're very welcome.  Thanks for the compliment, and best of luck to you!