Reoccuring Problem

This may be a long post so bare with me. I posted a few weeks ago with a SQL issue involving Backup Exec. Long story short I wiped out all SQL on my server and reinstalled Backup exec. It was running fine for about a week and this morning I came in and I can't start the console becasue the services are stopped. I can't start any of them and it is giving me the same errors as before I reloaded. It is a fresh copy of Backup Exec 11d which loads a SQL Express it says. I wiped everything out before the install becasue this is the only thing using sql, after I loaded BE back on I now have in my add/remove programs Micosoft SQL Server 2005, Microsoft SQL Server Native Client, Microsoft SQL Server Setup Support Files, Microsoft SQL Server VSS Writer and also I have MSXML 4.0 SP2 and MSXML 4.0 SP2 Parser/SDK and MSXML 6.0. I had a one time shot with symantec and thats when we reloaded BE and he told me that BE has something to do with MSXML. So this morning I had this in my event viewer Event ID 1000 Faulting application sqlservr.exe, version 2005.90.2047.0, faulting module kernel32.dll, version 5.2.3790.2756, fault address 0x00015e02.

I can't start SQL Server (BKUPEXEC) or SQL Server Browser in my services as they give me the error 1053 The service did not respond to the start or control request in a timely fashion.

What am I doing wrong why did the service just quit in the middle of the night for no reason after working great for a week or so? Is this more of a symantec issue? Thanks for all the help.