Repairing Windows Vista Startup
Vista does ur boot? neither in normal mode or in Safe Mode?
Here, a small trick that can repair boot Vista:
Start your PC with the Vista DVD. If you have not, you can create using this trick
Insert the installation CD and restart your PC. If nothing happens, go to the next step.
When you start your PC, try the button that displays the list of devices to boot your PC (usually F12). Then select the CD drive.
If you can not find the key, then go to the BIOS:
Access the BIOS setup
Usual BIOS
Changing the order of boot devices
Press any key when the system prompts you to.
Wait while loading.
Click
Next.
Click
Repair your computer
Click
Next
Click the
Startup Repair
Wait for the repair and then restart your PC.
Accuracy: It is possible that the repair does not work the first time, not panic, try handling multiple times if necessary until the boot is properly repaired.