How to reformat my Toshiba laptop S855-S5369 without recovery cd.?

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-S855-S855D-S850-S850D/Toshiba-Satellite-S855D-disassembly-1.htm.

install drivers
http://www.odrivers.com/2012/08/toshiba-satellite-s855-s5254-win7-64-bit.html

There is nothing else to consider as you have copied the data files you need.
Boot up with the Toshiba recovery CD to setup the laptop back to the factory out of the box condition and follow the instructions.
A fresh copy of Windows will be installed plus the laptop's device drivers. You then need to install programs such as MS Office etc.

Sounds like your windows CD isn't bootable.
Try hitting F10 during the POST and see if it takes you to a utility application that allows you to reformat the system from the system recovery partition of the hard disk

1

If you have the recovery cd, you can just pop-in the CD, select the reformat option and the installation process will continue automatically. Some laptop might have a special partition in the drive contains the operating system, drivers, etc. in case you want to reformat your laptop without the CD.

2

If you don't have the recovery CD, you usually can request one from the manufacturer. Otherwise, if you want to do a clean install, make sure you download all the drivers for your laptop, this may includes: motherboard, chipset, graphic card, sound card, modem, network card. Once you do that, put in the OS CD and start installing.

3

If you decided to do a clean install without the recovery CD, it would be best to create partition on your harddrive first, so you can have dedicated partition for operating system and backup. The next time you want to reformat your harddrive, you can just reformat that particular partition ex. C:\

You can obtain a recovery CD from Toshiba. Go to www.toshiba.com and order a recovery CD.

1. If you have the recovery cd, you can just pop-in the CD, select the reformat option and the installation process will continue automatically. Some laptop might have a special partition in the drive contains the operating system, drivers, etc. in case you want to reformat your laptop without the CD.
   
2. Step 2 If you don't have the recovery CD, you usually can request one from the manufacturer. Otherwise, if you want to do a clean install, make sure you download all the drivers for your laptop, this may includes: motherboard, chipset, graphic card, sound card, modem, network card. Once you do that, put in the OS CD and start installing.
   
3. Step 3 If you decided to do a clean install without the recovery CD, it would be best to create partition on your harddrive first, so you can have dedicated partition for operating system and backup. The next time you want to reformat your harddrive, you can just reformat that particular partition ex. C:\
   
4. Step 4 After the reformatting process finished and you have installed a new clean OS. Install drivers one by one and restart when it's required. Try to do it in order from basic function -> secondary ex. motherboard, chipset, graphic, sound, modem, networking, etc.
   
5. Step 5 Install back all programs that you might need. If you already backup the installation programs or have the installation CDs handy, you can do this pretty fast.
   
6. Step 6 Rearrange the look and customize your new operating system, refer to the screenshot you have taken earlier before the reformatting process begin if you want to get the same look and feel.
   

Step
1If you have the recovery cd, you can just pop-in the CD, select the reformat option and the installation process will continue automatically. Some laptop might have a special partition in the drive contains the operating system, drivers, etc. in case you want to reformat your laptop without the CD.
Step
2If you don't have the recovery CD, you usually can request one from the manufacturer. Otherwise, if you want to do a clean install, make sure you download all the drivers for your laptop, this may includes: motherboard, chipset, graphic card, sound card, modem, network card. Once you do that, put in the OS CD and start installing.
Step
3If you decided to do a clean install without the recovery CD, it would be best to create partition on your harddrive first, so you can have dedicated partition for operating system and backup. The next time you want to reformat your harddrive, you can just reformat that particular partition ex. C:\
Step
4After the reformatting process finished and you have installed a new clean OS. Install drivers one by one and restart when it's required. Try to do it in order from basic function -> secondary ex. motherboard, chipset, graphic, sound, modem, networking, etc.
Step
5Install back all programs that you might need. If you already backup the installation programs or have the installation CDs handy, you can do this pretty fast.
Step
6Rearrange the look and customize your new operating system, refer to the screenshot you have taken earlier before the reformatting process begin if you want to get the same look and feel.

Instructions

1. If you have the recovery cd, you can just pop-in the CD, select the reformat option and the installation process will continue automatically. Some laptop might have a special partition in the drive contains the operating system, drivers, etc. in case you want to reformat your laptop without the CD.
2. If you don't have the recovery CD, you usually can request one from the manufacturer. Otherwise, if you want to do a clean install, make sure you download all the drivers for your laptop, this may includes: motherboard, chipset, graphic card, sound card, modem, network card. Once you do that, put in the OS CD and start installing.
3. If you decided to do a clean install without the recovery CD, it would be best to create partition on your harddrive first, so you can have dedicated partition for operating system and backup. The next time you want to reformat your harddrive, you can just reformat that particular partition ex. C:\
4. After the reformatting process finished and you have installed a new clean OS. Install drivers one by one and restart when it's required. Try to do it in order from basic function -> secondary ex. motherboard, chipset, graphic, sound, modem, networking, etc.
5. Install back all programs that you might need. If you already backup the installation programs or have the installation CDs handy, you can do this pretty fast.
6. Rearrange the look and customize your new operating system, refer to the screenshot you have taken earlier before the reformatting process begin if you want to get the same look and feel.
   

Do it and reply me.

It is not clear what you mean by restore here... do you want to salvage you r personal data on laptop or just want to restore the OS... which you said you have installed XP.
the copied recovery disc may not be booting for various reasons...
1.not set to boot fromcd drive in bios settings.
2. cd copy was not cd to cd copy or it was not made bootable. maybe you just copied the data of the friends recovery disc.