Hi
OK fair play wingreen, not a lot of viable options remaining I'm afraid...........I would like for your good self to download the below please:
Avira AntiVir Rescue System
Then burn it to either a blank DVD or CD-ROM./R
After that place it in the CD drive of your infected machine and see if will boot-up correctly. If it does post back please and we can proceed from there and acknowledge the below, thank you.
Note: If we use the AARS in a proactive manner and you do not have any backups and in turn they are lost and or a means to carry out a reformat and reinstallation of the Windows operating system be it via the CD's and or HP recovery partition neither myself or Safer Networking will be held responsible for the free advice I impart.