As for Acronis:
1. Did you try to do the mount on the HP or on the other computer. The USB drive should be connected to other computer, start Acronis and run the mount on other computer -- Yes, all this was done
2. If problems with this, first thing I’d ask is: have you run Windows update yet on older computer as I know not used in quite awhile. May need updated functionality via Windows updates. -- The comp updated something manually, but I see there are updates waiting to be installed (it was Malicious Software Removal Tool Dec 2008)
3. As to viewing backups with Acronis
a. When Acronis creates a backup, note that you only see a file with a .tib extension
b. .tib files are Acronis files and use a propietary file format. They’re also compressed to reduce their size. You can never view or use an Acronis backup file without using an Acronis tool because to handle the proprietary backup file
c. Mounting the backup file to easily explore it with Explorer is one method to view the backup but there are other methods as well. Try right click on the backup file, then choose Explore -- I had tried this also but still got the same error msg