Windows 7 safe mode boot problem

Hello everyone,
Please help me with the folowing problem

THIS IS THE ERROR WHAT THE STORY DOWN BELOW IS ALL ABOUT: "Windows cannot complete installation in safe mode. To continue installing Windows restart the computer."

THE PROBLEM:
- i start the computer
- toshiba logo Pops up etc.
- i have the choise of going into safe mode or just start window normally etc.
- i choose "start Windows normally"
- it is doing all kinds of stuff and saying it is loading bunch of things.
- screen goes black and after a while the "window 7 loading setup" logo Pops up
- than the ERROR: "Windows cannot complete installation in safe mode. To continue installing Windows restart the computer.
- i have no choice anything but "OK"
- so i click "OK" and it is doing al over again what i just told FROM "the problem" until this sentence.

WHAT CAUS THE PROBLEM:
- i wanted tot boot my computer in the safe mode.
- i clicked the "start button".
- i typed in the search bar: "msconfic" --> clicked enter.
- i clicked the tab "boot",
- i checked the ckechbox before "boot safe modus"
- clicked "apply" and "OK"
- restarted the computer and than there was the problem...

WHAT I HAVE TRIED TO FIX THE PROBLEM:
(Non of these thing have fixed it for me yet)
- restart the computer manualy.
- instead of chosing "restart Windows normally" i choose safe mode. --> din't work
- clicked F8: and had exactly these options:
• safe mode
• safe mode with networking
• safe mode with command prompt
• enable boot logging
• enable low resolution video (640×489)
• last know good configuration (andvanced)
• directory services restore mode
• Debugging mode
• disable automatic restart on system failure
• disable Driver Signaturen Enforcement
• Start Windows Normally

EXTRA INFO:
- i have a toshiba sattlelite.
- i have no cd or what so ever.
- you are a hero if you van tell me how tot fix this