OK it is a 64bit Vista system and the configuration screen indicates that a windows update is in progress
So what we will do now is install the recovery console and get the system rolled back to an earlier restore point
Download the following two programmes to your desktop :
1.
WiNTBootIc2.
Windows Vista RC 64bitExtract wintoboot to your desktop
Insert a USB drive of at least 1GB
Run Wintoboot
Drag and drop the Windows Vista ISO to the programme in the space indicated
Tick the Format box and accept the warnings
Press Do It
You will see it progressing
Insert the USB into the sick computer and start the computer. First ensuring that the system is set to boot from USB
Note: If you are not sure how to do that follow the instructions
Here When you reboot you will see this.
Click repair my computer Select your operating system Select System Restore Select an appropriate restore point
Then once done reboot to windows and let me know if it is OK