Aller au contenu principal

Tutoriels de réparation PC pour la gamme d'ordinateurs portables professionnels vendus à l'origine par IBM, puis rachetés par Lenovo en 2005.

698 questions Voir tout

Backlight does not work when unplugged

Just received a used Lenovo T450s. Problem is, when the charging cable is disconnected, the backlight turns off completely, while plugged in, its fine.

Already wiped the laptop, ran through numerous bios and driver updates, but the issue remains.

I confirmed this is not a battery/power option within windows. I DO need to replace the external battery, as it doesn't seem to charge, but the internal one works great. Just curious if anyone has had this issue, and maybe knows a fix, before I go off replacing the screen/battery.

Répondre à cette question J'ai le même problème

Cette question est-elle utile ?

Indice 0

3 commentaires:

Have you checked your power and brightness settings

par

As stated in my post, it doesn't seem to be a setting within windows. As far as brightness, brightness shows full, the screen is on, but the backlight is off.

par

Hi Have you tried running the Lenovo Solutions Centre battery diagnostic check to see if the internal battery is OK?

It seems that it is not capable of running the laptop and display backlight by itself without the power connected and as you say that the external battery may be faulty.....

par

Ajouter un commentaire

1 Réponse

The manual suggests using the ‘Lenovo Settings’ program to adjust power profiles. I know you said you ruled out the Windows power utility but this is a separate program that runs on Win 8 and 10. Sorry if this is redundant.

If that isn’t the problem then it really must be a battery issue.

Cette réponse est-elle utile ?

Indice 0
Ajouter un commentaire

Ajouter une réponse

James Bosch sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 0

30 derniers jours : 2

Total : 1,295