...Assuming you're using Windows XP which you haven't told us, then your best bet is to perform a "repair" install using the Windows XP installation CD. There are no guarantees regarding your personal files, (hopefully you have backups) but a "repair" install "should" reinstall all the operating system software but save your personal documents. Follow the instructions below to perform the repair installation.:
http://www.windowsxphome.windowsreinstall.com/installxpcdrepair/indexfullpage.htm
Hope this helps.
Grif
I have a Dell Vostro 1500. I have been have connectivity problem with it. And I have been getting help elsewhere on CNET. But now this is something new. When I was trying to turn on the laptop I get a blue screen stating.
" A problem has been detected and windows have been shut down to prevent damage to your computer.
If this is the first time you have seen this Stop error screen, restart your computer. If this screen appears again follow these steps.
Disable or uninstall any anti virus, disk defragmination or backup utilities. check your hard drive configuration. And check for any updated driver. Run CHDSK /F to check for hard drive corruption and restart your computer.
Technical error.
STOP 0x00000024 (0x00190203, 0x871162b8, 0xc0000102, 0x0000000)"
The problem is I cannot even get back on the computer to do any of these things. It will not let me even go into the safe mode. I just get this screen after the Windows screen comes on. I will appriciate any help.

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