My Acer E5-571P laptop's led keep turn on after shutting down the pc. last time i faced the problem i find solution in a forum that it caused to updating to new driver , but this time i can't find the forum and can't find which drive it was?
You can get the latest drivers for your laptop from Acer support. Choose your country here:
If only LEDs are coming on but the laptop is otherwise fully functional, I wouldn't pay much attention to it unless the LEDs are actually informing you of a hardware problem (Check the laptop user manual for LED error codes).
If you lost the user manual you can also download that from Acer support.
I can't give you a link which takes you straight to the downloads page for your model on account of the way the site has been constructed using inline frames (iFrames) for model selection, which means the page URL doesn't change.
You'll have to navigate the support pages yourself.