Cannot re-start Windows XP When Switch 3 GB in Boot. ini

I think I have solved the problem disscussed in my last post. However, I have made a mistake. I have used ate my boot. ini like this:

 [Boot loader]
Timeout  =  30  
  Default  =  Multi (  0  ) Disk (  0  ) RDISK (  0  ) Partition (  1 ) \ WINDOWS
[Operating systems]
Multi (  0  ) Disk (  0  ) RDISK (  0  ) Partition (  1  ) \ WINDOWS  =  "  Microsoft Windows XP Professional  "     /  Noexecute  = Optin  /  Fastdetect 

I can not restart my computer when I have done that on system. the reason is that if some of the critical Windows Start up files can't load in the initial 1 GB of memory when you boot in 3 GB mode, windows won't start at all. if you do get errors trying to boot up in 3 GB mode, reboot in 2 GB mode (default) and reconfigure the boot. INI file. you may just need to edit the 3 GB option to use only 2.9 GB or 2.8 gb ram, to allow your operating system just that bit more kernal address space.

So we shoshould change boot. ini file:

 [Boot loader]
Timeout  =  30  
 Default  =  Multi (  0  ) Disk (  0  ) RDISK (  0  ) Partition (  1  ) \ Window s
[Operating systems]
Multi (  0  ) Disk (  0  ) RDISK (  0  ) Partition ( 1  ) \ WINDOWS  =  "  Micro soft Windows XP Professional  "     /  Fastdetect  /  Noexecute  =  Optin
Multi (  0  ) Disk (  0  ) RDISK ( 0  ) Partition (  1  ) \ WINDOWS  =  "  XP Professional 3 GB Switch  "     /  3 GB  /  Userva  =  2900     / Fastdetect  /  Noexecute  =  Optin 

This time when you select the 3 GB option, the userva will tell the system to allocate 1.1 GB to the operating system and 2.9 GB to the applications. configure as necessary (changing the userva to 2800,270 0, etc), until the 3 GB option works.

Also MS tells us how to enable 3 GB and use userva, memory support and Windows operating systems

But we shoshould avoid to set 3 GB swtich in Windows XP system. Since it is known that some plugins can not work properly, for instance Here plug in issues.