Hi vfcork4al67, did your notebook come with restore cd's or a windows cd? If yes load your restore cd or windows cd into the cdrom drive. Boot the notebook. The notebook should go to
the cdrom & start to load the cd. Follow the on screen instructions if you booted to the restore cd & re-install the operating system. This will over write windows & repair windows files. If your not using a restore cd but do have a windows cd repeat the same instruction above as if it were the restore cd.
I'll post a link for your Toshiba Satellite a100 notebook but there are many A100's. You will need to find the correct notebook you have. Click the link below & find your notebook.
Once you find the corect A100 download the network card driver. You will need this to enable you to get online & download all the updated drivers for your notebook. I suggest you update windows asap. Many drivers & software installs need many window updated files in order to function correctly. Turn on windows firewall to help protect you while downloading & untill you install virus protection. Need some free virus protection. Click the link below & download & install AVG.
Have more question, feel free to ask.
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Good Luck & have a Great Weekend!