I use Toshiba Satellite L310. When i starting on the computer, i didn't see any command key to get into my computer BIOS. I just see a TOSHIBA logo.

SOURCE: how to remove bios password for Toshiba Satellite A200

If you know the current password, use it to enter BIOS SETUP.
Then, type a "blank" ("space-bar") as the "new" password.

If you don't know the current password, you're stuck;
this is a "security" feature to prevent a stolen laptop from being used by the thief.

SOURCE: TOSHIBA LAPTOP SATELLITE L310 drivers

http://www.elitezoom.com/toshiba-satellite-l310-windows-xp-driver.html

link
and this link also ,,,
http://www.getpcmemory.com/drivers/download-toshiba-satellite-l310-notebook-windows-xp-drivers/

SOURCE: toshiba-satellite-l310-drivers

Dude, better yet just go to the Support.toshiba.com website so that all the downloadable drivers are updated rather than going to that page that also aquires information the the main site.

SOURCE: Toshiba Satellite L310 problem , display cannot appears

If the screen went blank after the driver install, sometimes clicking the mouse on the screen will bring the picture back. It sounds like the monitor is having a conflict with the resolution the driver is throwing out. Reboot the laptop and when you see the Toshiba splash screen, tap F8 until you see the multiple boot menu. Scroll to Safe Mode with networking and reboot. If the screen comes up, go to the control panel > System > hardware > display adapter > click on the plus sign and double click the reported adapter.click on driver tab and select roll back driver > click yes to any prompts and click ok. Reboot normally and see if that clears the problem.

SOURCE: toshiba satellite 1415 S-173 BIOS entry key

Try this...

Toshiba® 335 CDS ESC Toshiba Protege ESC Toshiba Satellite 205 CDS F1 Toshiba Tecra ESC then F1 or F2 Toshiba Notebook [Newer models]
1. Turn on computer by Holding down power button while pressing the ESC key.
The machine will beep, then display:
Check System, then press [F1] key.
2. Release ESC key
3. Press F1 key