how to fix my laptop??

[iamwwoo]

Hi~
Im using Toshiba Satellite L645.
I had problem with my laptop.
My lapotop screen turn black after startup and suddenly stopped windows messages popups and the screen turn black back.
What should I do to fix it, I had no idea any more.
Some ask me to restart and press f8 button to start safe mode, but its not working..
What should I do??
A lot of my school work and assignments in my laptop..
Please help me~

 

[electrontau]

To see if it is windows problem, you can boot Ubuntu from a CD/DVD. If the problem persists, hardware issue.

To find out if it is hardware issue, connect laptop to a monitor. Turn it on. If there is image on monitor, it seems that laptop monitor is defective. If there is no video, then graphics card is bad. Reminder: graphics card is integral part of motherboard. If laptop is still under warranty, you can take to Toshiba authorized repair center and get i repair. If out of warranty there are several companies that do the repair. Expect a month or so to get it repaired.

I would recommend to take the hard drive out and connect to another computer (via SATA to USB cable) to backup your data.

Good luck.

 

[rogigor]

It seems that your Windows crashed. Just reinstall it using a DVD or recovery mode. Start your laptop and immediately start pressing F8 to enter it. If it doesn't work then use a DVD to format your hard drive. If it doesn't help then there's probably something wrong with the hardware. But first things first - reinstall your OS.