Windows installation disc

VOSTTO

Windows Boot Manager

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:

1. Insert your windows installation disc and restart your computer.

2. Choose your language settings, and then click "Next."

3. Click "Repair your computer."

If you do not have this disc, contact your system administrator or computer manufacturer for assistance.

Status:

0xc000000f

Info: The boot selection failed because a required device is inaccessible.

ENTER-Continue

ESC-Exit

This problem is been shown to me