Windows stop at loading screen

Like title say .....i run an Fujitsu Siemens Amilo Xi 3650....
after windows download some update he rebooted and stop at black loading screen...
i wait for him 5min and nothing it's dead no activity ....
i rebooted manually ....
after reboot i get to choose 2 options start win normally and repair ...
i choose normally and the same thing...
i try 2nd option and i wait like 4 hours at searching for problems...
then i press cancel and windows freeze....

so i said Huston we have a problem !!!!
...
i reboot it manually press F8 i choose "Safe mode" ....guess what it freeze
i try "last know good config .." guess what it freeze
i try "vga mode " same thing

so i go on father google ....i don't find anything to do so i open a thread...maybe you can give me some advice i don't wanna reinstall it.

If you put in your dvd and run it up you can do a "startup" repair which will not alter your settings, docs etc.

Boot the DVD Repair console or Repair CD to run System Restore from System Recovery Options

Next run Startup Repair up to 3 separate times with reboots.

Next test your RAM with memtest86 for 5-6 passes or overnight: RAM - Test with Memtest86+ - Windows 7 Forums

Next test your HD with maker's Diagnostics/Repair full CD scan: Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp

If it will not repair you can copy out your data this way: Copy & Paste - in Windows Recovery Console - Windows 7 Forums

Then run the Factory Recovery partition or disks, or clean reinstall: Clean Reinstall steps