Xp

I installed a Pity old CD writer on my computer also i installed roxio as software it shows it was not compactable with Windows XP.So after restarting the machine i Uninstalled the software also.After uninstalling the software when i tried to restart the machine it shows me a Stop error.How can i repair this?I don’t have XP boot CD.Error No: is 000000007b.Please help me