named server failed logon after installing MS04-011 patch

Need help urgently.
I have on win 2000 machine a default SQL Server (local) & a named SQL Server
instance (for separate web machine).
After installing the MS04-011 Patch last nite, the named SQL Server fails to
startup on reboot or manual. The default server on the other hand is runnin
g. But I cannot use the default server as it requires access within the loca
l machine only.
I tried uninstalling the patch, but it still cannot get the SQL server runni
ng again.
HOW CAN I RECOVER THE SQL Server Instance?
Additional info: On logon, following error massage:
"NtUninstall Q8877565\WinSys.cer" not found
before and after the uninstall of the patch.What error do you get when you start it? Is there anything in he SQL Server
errorlog when it fails?
Rand
This posting is provided "as is" with no warranties and confers no rights.|||Thank Rand for responding.
The Error is simply Login Failed. Service Manager shows the instance is stop
ped, while the Default Instance (Local) is started. Click start, and return
Login Failure again.
Any idea what's wrong and how I may recover the Instance?
Almon|||Error listing end at the last restart after patch install. That is, never re
start again.
Almon