I restored my toshiba laptop satellite l755 s5353 to out of box state but now its not working what do i do?

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I think what you are after is a reset of the laptop to factory default condition.

If that is the case follow instructions on this link. FAQ How do run System Recovery Support Toshiba Computers Laptops...

Otherwise if you want to reset bios password then go to the instructions at this site. Toshiba Satellite P755 Bios Password Removal

"The screen is a 15.6? diagonal widescreen TruBrite TFT display with a native resolution of 1366×768. This display is LED backlit and a 16:9 aspect ratio."
(Driving this display is the Mobile Intel HD graphics chip. It supports 64-1696MB of shared video memory. This is not the card to play video games with.")
From: http://www.bbspot.com/reviews/toshiba-satellite-l755-s5216-laptop-with-intel-pentium

Try the user manual here: http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=3025240&rpn=PSK1WU&modelFilter=L755-S5244&selCategory=2756709&selFamily=1073768663

Restore Toshiba to Out of the Box Condition
If your model Toshiba laptop has a Restore partition on the hard drive then follow these steps to restore your Toshiba to the Out of the Box condition.
1. Press and hold the 0 (zero) key and at the same time, tap the power button once to switch on
your notebook.
2. When the machine Starts beeping; release the 0 key.
3. When prompted by the warning screen; select Yes to continue with the system recovery.
4. Select Recovery of Factory Default Software; click Next.
5. Select Recover to out-of-box state. 6. Click Next again.
7. Click Next to Start recovery.
8. Restart the Toshiba laptop when there restoration process finishes running. Follow the prompts that appear on the screen to set up the laptop's date, time and language settings.

Restore Toshiba to Out of the Box Condition
If your model Toshiba laptop has a Restore partition on thehard drive then follow these steps to restore your Toshiba to the Out of theBox condition.
1. Press and hold the 0 (zero) key and at the same time, tap the power buttononce to switch on
your notebook.
2. When the machine Starts beeping; release the 0 key.
3. When prompted by the warning screen; select Yes to continue with the systemrecovery.
4. Select Recovery of Factory Default Software; click Next.
5. Select Recover to out-of-box state. 6. Click Next again.
7. Click Next to Start recovery.
8. Restart the Toshiba laptop when there restoration process finishes running.Follow the prompts that appear on the screen to set up the laptop's date, timeand language settings.

Available here: http://www.retrevo.com/support/Toshiba-L755-S5242-Laptops-manual/id/23969ci476/t/2/

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next to the F1 key and the windows key (2nd upper key and second to last key) are two screws, usually under some covering. unscrew and lift top edge of the keyboard towards the trackpad to lay face down. Undo the wire ribbon by lifting the grey or brown tabs and remove ribbon and keyboard. Then install the new keyboard by inserting the ribbon on the place. Lock down with the tabs and put the plastic prongs (close to the space bar) into the laptop body first, and then close keyboard onto the final position. screw back in and thats all. [email protected] for any additional questions.

press and hold fn and press f11.it sounds like you activated the sticky keys