I have an Inspiron 6000 that I bought back in July, and about a month ago I go a couple virus notifications from Norton Internet Security 2005 saying that the viruses were found and deleted, one was a trojan and the other was a normal virus.  After that though the quarintine would fail to open, and later after that live update failed to open (I do have a subscription).  Also whenever I opened norton internet security my computer would lock up for about 2-3 minutes.  I couldn't find anywhere to download or get a new cd to reinstall norton because my computer didn't come with the cd, it was already installed (it's xp prof too).  Does anyone know where I could find a place to download Norton so I can reinstall it?

 

Yesterday in the morning it was working fine, then later at night when I tried to turn it on it took about 12 minutes to get to the log in screen.  The log in screen also changed from the normal log xp log in screen to more of a server log on box.  After putting in my password about 3 minutes later a message appears saying "Explorer.exe - application error.  "The application failed to initialize (0xc0150002)."  After clicking ok nothing happens.  If I hit shift 5 times for sticky keys it still beeps at me, but ctr + alt + dlt does absolutely nothing.  The light on my computer that signals it's working is constantly on, but all that shows is my desktop background and a larger than normal mouse icon.  I think I may have to reformat my computer but I don't want to lose all the files that I have so does anyone know what I could possibly do? 

 

Also I tried the diagnostics test from the pre boot menu and an error arrised code: 1000-0142 on the DST short status test.