Hi - I just updated my version of boinc to 7.6.22 w/ VBox - lost all of my previous work because it did not install in the same place & I can only get 7 of 8 cores to run. I should be able to run 10 tasks at once 8 cores on cpu, 1 core on NVidea GPU, & 1 task WUProp@Home !!!

---

...because it did not install in the same place

Well, uninstall and reinstall the correct version then and into the correct directory.

32bit must install to C:\Program Files (x86)\BOINC\ under Windows 64bit.
64bit must install to C:\Program Files\BOINC\ under Windows 64bit.

You cannot install 64bit BOINC under Windows 32 bit, but you can install 32bit BOINC under Windows 64bit.

It can be confusing because BOINC remembers the previous install path of the previous BOINC it installed, and it doesn't fix the path if you e.g. go from 32bit to 64bit BOINC, it'll install the 64bit BOINC to the 32bit protected Program Files directory, and Windows will not allow 64bit programs to start from there.

If that isn't your problem, please explain better.
If you lost the data directory, it will probably still be in the old place, you may have inadvertently pointed the installer to the wrong directory, or something else went wrong during installation.

The default place for the data directory is a hidden directory at C:\Programdata\BOINC\ but if you fill that path in into Windows Explorer and hit Enter, you will get there and see the contents if there are any there(*).

If you didn't get into the data directory now, you must've moved it elsewhere and need to do a search on your computer for client_state.xml, a file that's certainly in the data directory.

(*) The problem with that though is that a new install will put its data directory default there.Quickest way to check this is the right place is to check for the account_*.xml files of the various projects you've added to BOINC. If these are missing, you're in the wrong place.

---