To get BOINC to run at startup, it needs to not require admin. privileges to run. There is a workaround, though, which I'm using successfully (hence my need to re-allow BOINC to run at startup to get the blocking info): Use Task Scheduler to create a task to launch BOINC. You need to choose "Create Task..." (as opposed to "Create basic task...") from the right-hand side of the window under "Actions". I don't remember the specific steps under "Create a task..." now, but when the task has been created, it should have the following properties:

General tab: "When running the task, use the following user account" should be your user account; "Run only when user is logged on" should be chosen; "Run with highest privileges" should be checked.

Triggers tab: The trigger should be "At log on" and the user account in the details should match the one on the General tab.

Actions tab: The action should be "Start a program" and the details should be "C:Program FilesBOINCboincmgr.exe /s". When setting it up, only "C:Program FilesBOINCboincmgr.exe" goes in the "Program/script" box; "/s" goes in the "Add arguments (optional)" box. If you're copying stuff directly from the shortcut, just ignore the "Start in (optional)" box, even though it's in the shortcut. If you try to have it start in the "C:Program FilesBOINC" folder, which is the default in the shortcut, it won't start because in Vista users don't have permission to write to that folder by default.

Conditions tab: I left these at their defaults. I assume they can be changed to taste.

Settings tab: Same as Conditions tab; I left at default.