Windows does not reboot after each time I shutdown.

so system restore->normal boot works ALWAYS, but only once
system restore->safe mode many times safe mode.... works
system restore->safe mode many times safe mode.... works->normal boot...black screen

is above correct?

system restore->normal boot->don't do system restore!->safe mode..... also black screen?????

Ikhlaas14 said:

System restore ALWAYS works
safemode ALWAYS allow me to logon normally
normal boot NEVER works and I come back to my black screen (It worked only the first time u asked me to start in safemode first, but this no longer works and I had to use system restore again)

I understand most of it.

normal mode never works????
I thought it does work.... but only once after system restore??? ALWAYS once after system restore. Correct me if I understand wrong

boot into safe mode and use msconfig to disable autoload programs and non microsoft services.
Now boot normally. works?
Troubleshoot Application Conflicts by Performing a Clean Startup

in registry (so run regedit) browse to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

what is the value of shell in the right part of screen?

On the black screen:
Press Ctrl+Shift+Esc on the keyboard to bring up Task Manager.
works? if working:

1. Click File -> New Task (Run…)
2. Type explorer.exe and then press Enter.

If this does not work try the same again but just type in explorer.