I use Windows 7 64 bit and Core Temp version 0.99.8.0 - 64 bit. It doesn't actually matter if you put Core Temp in the "Program Files" folder (or "Program Files (x86)"). I keep my Core Temp folder in the Program Files folder. If the setting above doesn't work, a couple of additional step you should follow are below (the number of the steps comply with the number of steps in the above post, so that step 12.5 below comes after step 12 above):
2.5. You can put the Core Temp folder in the Program Files folder if you wish (even thought it's controlled by Windows)
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12.5. In the Advance Settings option, check the box "Delay task for:" and set it to "1 minute"
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14.1. Stay at the Triggers tab and click New again...
14.2. In Begin the task, select At startup
14.3. In the Advance Settings option, check the box "Delay task for:" and set it to "1 minute"
14.4. In the Advanced Settings options, check the box Enabled
14.5. Click OK to close the dialog
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20.5. Check the box "If the task fails, restart every:" and set it to "1 minute"
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26. If the Core Temp icon(s) doesn't appear in 30 seconds after the start up wait more, like 2 minutes. If it still doesn't appear in the system tray, first make sure that it's not hidden in the system tray arrow. If it's in the system tray arrow, you can right click the arrow, select Properties, then select Customize notification icons and change the behavior of the Core Temp icon(s) to Show icon and notifications. (If you set the color of the Core Temp icon text to white, it doesn't appear in the system tray arrow window because of the white background, but it may still be there. Click the empty fields to check)
27. If the Core Temp icon(s) is not in the system tray or hidden, then run the Windows Task Manager. On the Processes tab, sort the processes by Image Name. Check if Core Temp.exe is in the list.
28.A. If Core Temp.exe is not in the processes list, then you probably did something wrong while scheduling the task. Go back to the Task Scheduler. Select the Task Scheduler Library from the left menu. Find the Core Temp task and verify that it's status is "Ready". If the status is "Disabled", right click the task and enable it. If the status is "Running" the task is actually running, so maybe you addressed the action in the task wrong. Check that and go over the other steps in the post above and here. End.
28.B. If Core Temp.exe is in the processes list, then you probably didn't enable 'start minimized' on Core Temp and it's window is either on the desktop or minimized to the task bar. Check that and go over other steps in the post above. End.