When Windows XP tries to load, I get the following message: "We apologize for the inconvenience, but Windows did not start successfully. A recent hardware or software change might have caused this." My options are: Start in safe mode. Safe mode with networking. Safe mode with command prompt. Last known good configuration setting (most recent setting that worked). Start Windows normally. and it just keeps repeating

Enter in "Last known good configuration. Then Remove temp files from computer. Press windows key + R then you can see type in run "%tmp%" without "" then press enter then remove all temp files.Type in run "prefetch" without "' then press enter remove all prefetch files. Type in run "chkdsk /r" then press enter then press "y" . Then right click on my computer icon click on property then click on hardware tab then click on "hardware profile tab" Then select another profile is there is 2 profiles then apply and check but if there is only 1 profile then you need to create new profile with below method. Click Start, click Control Panel, click Performance and Maintenance, and then click System. On the Hardware tab, click Hardware Profiles. In the Available hardware profiles box, click Docked Profile or Undocked Profile, and then click Copy. Type a name for the new hardware profile, and then click OK. Click the new profile, click Properties, select the This is a portable computer check box, and then select the best description for the profile (the docking state for the profile). Click Always include this profile when Windows starts.
Let me know if you need further assistance. Thanks for using FixYa.

Try hitting F10 to do a system repair, it should hopefully repair your startup problems. If successful, update your Anti-Virus software and do a complete systems check.