Why has my Winxp startup with just the basic devices ans services

Microsoft Windows XP

The msconfig shows normal startup. It shows no restore date just the one today.
So I can do a restore.
Explorer and Mcafee dosn't work.
Restart in Safe Mode and run McAfee.
Thanks, I also lost the help and support , networking and Mcafee. The same
in safe mode.

Click Start, Run, type SFC /SCANNOW, click OK. If any files are damaged
or missing, they'll be replaced. You may need to reboot afterwards so
damaged files will be replaced.

To do a repair install:

Also look for more help here:

Thanks for the professonal help.