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I just formatted a Toshiba Satellite A300D-14R and installed Windows 7.

In normal use it shuts down the backlight of the screen after some minutes, but, with a strong light in the room, you can still see that the screen itself is still working. In Safe Mode there are no issues.

Video card and BIOS are updated.

EDIT:

I tried also to install:

  • XP SP1 --> BSOD during installation due to pci.sys
  • XP SP3 --> loads correctly but didn't installed it.
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In normal use il shuts down the backlight of the screen after some minutes, but, with a strong light in the room, you can still see that the screen is working.

Windows dims the display first, then turns it off later. If you wait a few more minutes, the screen will turn off completely.

It is definitely desirable to turn the screen completely off when not in use because even without the back-light, the video-adapter is still using power to render the screen, so turning the display off completely helps save even more power.

You can adjust the setting as desired:

  1. Open the Control Panel
  2. Select Power Options (figure 1)
  3. Click Change plan settings (figure 2)
  4. Click Change advanced power settings (figure 3)
  5. Scroll down to Display and expand the branch
  6. Expand the Dim display and Turn off display branches
  7. Adjust the values as appropriate (figure 4)
    • You can also change them for the other power-plans (figure 4, orange)
  8. Click [Apply], then [Save Changes]

Figure 1: Power Options in the Control Panel

Power Options in the Control Panel

Figure 2: Power Plans

Power Plans

Figure 3: Power Plan Settings

Power Plan Settings

Figure 4: Display Options

Display Options

  • (I also use an AutoHotkey script to let me turn the screen of manually by pressing ⊞Win+M.) – Synetech Jan 8 '14 at 2:08
  • I wish I could upvote you ten times for giving screenshots with your directions. – ChimneyImp Jan 8 '14 at 2:46
  • Unfortunately everything is setted on "never shout down" and so on. – Enrico Jan 9 '14 at 1:41
  • Exactly, that’s why the screen isn’t turning off. Just set Dim Display to something to turn off the back-light, and set Turn display off to turn it off completely. – Synetech Jan 9 '14 at 1:48
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This isn't actually a solution....

I installed Windows XP SP3 with all the drivers found on the Thoshiba support website. The backlight problem was still there. Leaved the laptop without power for about 24-30 hours and it worked correctly for about 1.5 hours and more (and there are no problems still now).

I think that there are some drivers checking temperature: drivers not working in Safe Mode, but still on with "Normal mode", also with VGA Standard Drivers (Compatibility Mode). Really I don't know.

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