Question about Fujitsu LifeBook T4220 Notebook PC Notebook

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Fujitsu lifebook T4220 turns on but black screen with lock flash

When I start up my lifebook it powers up but the screen remains black. When you look at the display where the battery is there is a flashing lock.
I have shut down the computer. Taken out the battery. Left the computer off for hours without the battery. Restarted the computer and the same thing happens. This has happened once before but resolved itself immediately.
The computer was shut down while it was loading prior the last time it was started and worked correctly.

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How do i factory reset my fugistu lifebook T4220 with out a cd because my computer does not have the thing to put cd's

Step 1Reboot or turn on your Fujitsu Lifebook and press "F12" when the Fujitsu logo appears.
Step 2 Highlight "Recovery and Utility" using your arrow keys and press "Enter." If this options does not appear, you have to recover directly from the recovery disc. Step 3
Select a new keyboard layout on the first screen that appears, if your preferred keyboard is not already selected. Click "Next." Select "Use recovery tools...," and "Next" on the "Operating System" dialog screen. Enter your password, if your system is configured with one. Step 4
Click "Recovery and Utility" on the "System Recovery Options" screen. Step 5
Click the "Recovery" tab and click "Restoring the Factory Image (only C:\drive)." Follow the on-screen instructions to restore your Fujitsu Lifebook. Some models may require a supplied recovery disc be inserted at this point.

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