Ok, this is what I have come up with after 4 months:
I have tried the things you guys suggested and no avail.
I figured it must be a driver or something I installed when I tried to get the drivers and software back onto my computer.
I viewed the EVENT VIEWER and and kept noticing a error every time I shut down. It was the WLAN TRAY - I have been having issues with the Dell Wireless Card and drivers.
I then went to MSCONFIG and went to SERVICES and unchecked the WLAN TRAY from the list.
Last, I went to ADD/REMOVE Programs and uninstalled the BROADCOM modem and anything that said BROADCOM.
IT WORKED!! I don't want to get my hopes up since I have tried things before and it started doing the 10 min. shutdown a few times later. BUT, I have given it 5 days and it works instantly!!
I think I got it!
I don't know if this can help anyone with the same problem, but I found that installing the DELL drivers (since a lot of ppl with the problem have Dells), that the WLAN TRAY is the problem.