cant enter windows XP

[Guest]

Can anyone help me
after i disabled a antivirus program from starting up ( i dont know if that caused the problem) and after using Advanced System Optimizer to optimize registry i cannnot enter Windows XP not even safe mode .
i get this error message
STOP: c000021a{Fatal System Error}
The windows subsystem system process terminated unexpectly with a status of 0xc0000094 (0x75b657a8 0x0069fbf4)
The system has been shut down

What can i do about it???

 

[Rick \Nutcase\ Rogers]

Hi,

Disabling your AV software would not cause that problem, but no one knows
what damage the registry tool may have caused. Follow these steps to do a
repair install which should preserve your data, settings, and programs:

1. Insert the Windows XP CD into your computer's CD-ROM drive or DVD-ROM
drive.
2. Restart your computer. If you have to, change the BIOS settings to start
from
the CD-ROM drive or DVD-ROM drive, and then restart your computer again.
3. At the "Welcome to Setup" page, press ENTER.
4. Press F8 to accept the Licensing Agreement.
5. Use the arrow keys to select the installation of Windows XP that you want
to
repair, and then press R to start the automatic repair process.
6. When Setup is completed, activate Windows XP.

Note that you will need your Product Key for this procedure, so have it
handy before you begin.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP

Associate Expert - WindowsXP Expert Zone

Windows help - www.rickrogers.org

Can anyone help me
after i disabled a antivirus program from starting up ( i dont know if

that caused the problem) and after using Advanced System Optimizer to
optimize registry i cannnot enter Windows XP not even safe mode .

i get this error message
STOP: c000021a{Fatal System Error}
The windows subsystem system process terminated unexpectly with a status

of 0xc0000094 (0x75b657a8 0x0069fbf4)