My laptop toshiba sattelite l300 had a problem i was always restarting after being on for 3 min or 5min, then i cleaned the laptop becouse i thought it was overheating, i changed the RAm the CPu and quite everything but continued and all my effort went down. so i decided to format , and know i want to reinstall windows(xp, vista, 7, 8 and so on) but it restarts always when expanding files (vista,7 and 8) and (XP) whn registering thus not installing...what shall i do i live in africa Mozambique someone Help me i had to study English to write this

SOURCE: I am in need to install recovery console

Here's How:
Boot From the Windows XP CD

To enter Recovery Console in Windows XP, you will need to boot from the Windows XP CD.

1. Watch for a Press any key to boot from CD... message similar to the one shown above.
   
   
2. Press a key to force the computer to boot from the Windows CD. If you do not press a key, your PC will continue to boot to the Windows XP installation that's currently installed on your hard drive. If this happens, simply reboot and try to boot to the Windows XP CD again.

Press R to Enter Recovery Console

When the Windows XP Professional/Home Setup screen appears, press R to enter Recovery Console.

Choose the Windows Installation

The Recovery Console is now loading but needs to know which Windows installation to access. Most users only have a single Windows XP installation so the choice is usually clear.
To the Which Windows installation would you like to log onto question, press 1 and then Enter.

Enter the Administrator Password


The Recovery Console now needs to know the administrator password for this Windows XP installation. Unless you are using a PC in a sizable business network, the administrator password is most likely the same password you use to access Windows XP on a daily basis.
To the Type the Administrator password request, enter the password and press Enter.
Note: If you do not have a password or Windows XP normally starts without asking for one, simply press Enter.

Make Necessary Changes in Windows XP Recovery Console


The Recovery Console is now fully loaded and the cursor should be sitting at the command prompt, ready for input, as shown in the screen shot above.
Make any changes necessary in the Windows XP Recovery Console. When complete, take out the Windows XP CD and type exit to restart the computer.

1. When you reach the command prompt (detailed in Step 6 in the link above), type the following command and then press Enter.
   bootcfg /rebuild
2. The bootcfg utility will scan your hard drives for any Windows XP installations and then display the results. Follow the remaining steps to add your Windows XP installation to the boot.ini file.
   
3. The first prompt asks Add installation to boot list? (Yes/No/All).
   Type Y in response to this question and press Enter.
   
4. The next prompt asks you to Enter Load Identifier:.
   This is the name of the operating system. For example, type Windows XP Professional or Windows XP Home Edition and press Enter.
   
5. The final prompt asks you to Enter OS Load options:.
   Type /Fastdetect here and press Enter.
   
6. Take out the Windows XP CD, type exit and then press Enter to restart your PC.
   Assuming that a missing or corrupt boot.ini file was your only issue, Windows XP should now start normally.
   

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SOURCE: Toshiba Satellite L300 shuts down when ac power plugged in

How about this step, try to turn off the laptop itself. Remove the cables and battery just like what you did before, then press and hold the power button for 10 seconds. Then, reinsert the cables and battery on the laptop and then turn on the computer itself. If the laptop restarts, shuts down or freezes with the AC power cables, two things that you should seriously consider. It might be the power cable itself, AC cable port or the circuitry going to the motherboard. And since you have cleaned out the fan and heat sink, you have isolated that problem. Have you plug-in another power cable on your laptop? If yes, then check if it works. Otherwise, the main issue is that the AC port is loose or the circuitry of AC adapter going to the motherboard is not not working. You can re-open the unit and check the circuitry from the AC port going to the motherboard. You may check the circuitry from AC port to the power supply if it is ok. If symptom persist, please contact your local dealer...