I just ran a test and here are my results:
I have a Dual Boot system (Windows XP and Windows Vista). After selecting to restart the computer in Windows XP and tapping F8 to access Safe Mode, I started the clock when I selected "Safe Mode" from the Advanced Options Menu...
- 45 seconds to Safe Mode Desktop screen with the words "Safe Mode" in each corner
- 52 seconds until the disclaimer about Safe Mode and System Restore appeared (add three (3) seconds to read disclaimer and click Yes)
- 67 seconds until all Desktop icons appear and have full utilization of Safe Mode
Full Disclosure: My computer specifications are much greater than yours so that may be why there is such a difference in time. However, I believe 2 minutes and 48 seconds is a bit long, for Safe Mode access.
I reviewed your previous posts and this stuck out at me:
"It gets all the way to the Desktop and Taskbar and loads my SYnaptic Pointing Device before the HD suddenly goes quiet. At this point, if I mouse over the Taskbar my pointer becomes animated but I cannot bring up the Start Menu or the Taskbar Menu by right-clicking on Taskbar. The only thing I can do during this mysteriously quiet period is ctrl-alt-del the Task Manager into existence."
What this tells me is that A) the Operating System is fine and B) there is some application that is set to startup that hangs the boot up process. I see that you have confirmed that Norton is not running a system scan during startup. Within this Community, there are numerous people who would not recommend Norton because of its heavy resource load. Obviously Norton cannot be the culprit with every issue. However, as much as I do not want to blame Norton for every issue, we have had Discussions within this Community where Norton caused all types of issues.
I also noticed that you indicated you could access the Task Manager. It appears you have done quite a bit of research on your own but I did not notice if you ever checked the Processes tab of the Task Manager to see what process(es) is(are) taking up the most CPU Usage during startup. If you have not done that, can you do that for us now?
If the above suggestion does not yield any concrete evidence, I have not noticed if you have tried this or not but if you have not, I would advise you to...at least temporarily...completely remove Norton from your computer and then try again. If the boot up time still takes upwards of 20 minutes, then you know Norton was not the culprit and you can reinstall it.
The most effective way to completely uninstall Norton is to use the
Norton Removal Tool provided by Symantec. Once you download this tool and follow the steps, this tool will remove all traces of Norton from your computer. Please note that if you have any other Symantec or Norton applications installed in your computer (for example Norton Ghost), this tool will remove that application as well.
Once removed, restart the computer and see if you have the same issue.