Wrong recovery disk installed!! Please help!

Hello,
Can someone please help me? I iknstalled the wrong dell recovery disks on my hp laptop and now most programs are not running because of incorrect drivers. Can someone show me how to remove dell off my system and put in the correct disks? I tried running the correct disks but they won't even pull up or recognize the original recovery disks, the only recovery disk it's recognizing is the dell one so I dont know what to do, please help!! Thank you so much in advance!!!