Need some help here. I have a clients computer, Windows XP SP3. Ransomware opens when I boot. I am unable to boot in any Safe Mode options, computer just loops back to restart. I cannot run any files as the infection is preventing it, cannot open msconfig or registry. Could use any help available, have to get this computer back to my client ASAP. I have run a Panda SafeDisk Scan, nothing found, I ran an Avira scan, found nothing. Avg scan (with Hard drive installed in another computer), found nothing. Malwarebytes (with hard drive installed in another computer) found nothing. Computer is old so cant book off USB Drive? Created CDs for all the bootable scans above. No system restore point available either, all deleted.