Fatal System Error?

Thanks cookre, that sure was what happened to me.
I changed the HPGina to MSGina by accessing the registry through the network.

Now I get this message after booting:

Service Control Manager
     At least one service or driver failed during system  
     startup. Use Event Viewer to examine the event log
     for details.
                             OK

I click OK and press CTRL + ALT + DEL to log on and this comes up:

F:\Autorun.exe
     Can not fine the file 'F:\autorun.exe'(ore one of its
     components). Make sure the path and filename are
     correct and that all the required libraries are
     available.
                             OK

I checked the Event Viewer and this is what it said:

1- Description:
     The following boot-start or system-start driver(s)
     failed to load: HPGate

2- Description:
     the description for Event ID (22) in Source (HPGate)
     could not be found. It contains the following
     insertion string(s): ,PC Compatible Eisa/Isa HAL,
     . Translated.

If you have any ideas, I will appreciate them very much.
Thank you,
LuisP

cookre,

I was able to fix this problem:

F:\Autorun.exe
    Can not fine the file 'F:\autorun.exe'(ore one of its
    components). Make sure the path and filename are
    correct and that all the required libraries are
    available.
                            OK

but the one about the Service Control Manager still appears whenever I reboot this PC.
Thank you.
LuisP

Looks like the same site has this one, too:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x235a039599eed5118ff40090279cd0f9,00.html

Thank you cookre, both of your URLs helped me solve the problems that I was having with this PC.
LuisP