HELP! My Toshiba laptop won't boot and beeps constantly.

Ac7878, it sounds like your hard drive is no longer working. It fives you the error because it is trying to look for an operating system, and even tries to boot from the network. you can try and access your BIOS and see if your boot order is set to optical drive, the hard drive. Turn network booting off. If that does not work, try to boot from CD with a bootable disk. I recommend a lite Linux version, like Puppy Linux. It should boot up from CD. If it does, you can try and reinstall your operating system to see if that fixes it, or replace the hard drive if it does not. IF Puppy Linux can access your system, try to recover any important files, for as long as you can access it. Remember that formatting, reinstalling your operating system, and of course replacing your hard drive, will cause you to lose your files. Hope this helps, good luck.

UPDATE

Here is the procedures to access your BIOS based on the model: Here is the procedure for the different models:"

How do I get into the BIOS Setup?

Depending on which model you are using the method of getting into the BIOS will vary. Please select your model from appropriate list below and following the relevant instruction.

BIOS Access Procedure 1

Boot the system up and hold down the‘Esc’ key, then press F1 when you get the check system message. You are then in the BIOS Setup and you can make your changes and save and exit by pressing the ‘End’ key.

Libretto 50

Libretto 70

Libretto 1xx

Portégé 3xx

Portégé 6xx

Portégé 2xxx

Portégé 3xxx

Portégé 4xxx

Portégé 7xxx

Portégé Mxxx

Portégé Rxxx

Satellite 1xx

Satellite 2xx

Satellite 3xx

Satellite 14xx

Satellite 18xx

Satellite 20xx

Satellite 21xx

Satellite 2400

Satellite 2410

Satellite 2450

Satellite 25xx

Satellite 26xx

Satellite 27xx

Satellite 28xx

Satellite 4xxx

Satellite A10

Satellite A20

Satellite A40

Satellite Mxx

Satellite Pro 4xx

Satellite Pro 4xxx

Satellite Pro 6xxx

Satellite Pro A10

Satellite Pro A40

Satellite Pro Mxx

Tecra 5xx

Tecra 7xx

Tecra 8xxx

Tecra 9xxx

Tecra Mx

Tecra Sx

TE 2000

TE 2100

BIOS Access Procedure 2

Boot the system up and hold down the ‘F2’ key. You are then in the BIOS Setup and you can make your changes and save and exit by selecting the 'Save Changes' option.

Satellite 35

Satellite 10xx

Satellite 11xx

Satellite 16xx

Satellite 17xx

Satellite 19xx

Satellite 2430

Satellite 3xxx

Satellite A30

Satellite Pxx

Satellite Pro A30

BIOS Access Procedure 3

The BIOS cannot be accessed via boot up on these systems. To make changes to the BIOS setting on these models please use the Toshiba Hardware Setup utility located within Control Panel. The BIOS settings can be reset to their default valies by booting the system up and holding down the‘Esc’ key, then press F1 to reset to default settings when prompted.

Satellite 5xxx

If you can tell us what models Toshiba you have, I can be more specific about your boot options.