I have had this "Computer enters Power Saving Mode" nagging problem for years.
Each time I manage to solve it, pass it or reduce it, I forget about these forums where users are actually trying to solve such issues. So, this time I wanted to come back with the way I have solved it this time.
Description of the problem:
Computers of several brands, models and with multiple different configurations, have the monitor entering the dreadful "Entering Power Saving Mode".
Severity:
During different rashes, yes it seems to happen in rashes, because it behaves erratically, which can make you crazy trying to figure out what is the issue, sometimes it's solved with a restart, sometimes nothing seems to help, you have to retry starting up to 50 times, for that one quick time when Windows enters and you quickly make all the config changes that you saw on the last youtube video of possible fixes.
This past week, it was so severe for me that I was thinking of getting a whole new system. It happened right after the Alienware logo and before Windows first screen.
Hypothesis of causes:
I am not an expert and don't pretend to pass as one, and as I write I am waiting for the computer to fail. It is horrendous.
I believe that this is a problem that is triggered by different causes, seems to me to be related to causes related to energy and heat. Sometimes the computer thinks it's too hot, and to prevent damage triggers this behavior. Other times the computer has a problem with too low energy.
Nos the problem is -and I am sorry to say this- because many will wish it was easier. It's a problem between the graphics card and the operative system.
However all are fine - the card is fine, the PC is fine and the Windows is fine. But there is this-this is why I call it a behavior- where the computer triggers the Power Saving Mode.
Experts will tell you this:
Clean your computer, it is dust
Change and ventilate it better, its heat
Change the Sleep and Hibernate configurations
Update all your software, including and especially BIOS and graphics card
If your computer has more than one Video Card, disable one of them
What has worked for me:
Updating BIOS
Restarting the CMOS battery
Replacing the CMOS battery
And always update, reinstall your BIOS drivers
Also, maintain and do a clean reinstall of your Graphic Card.
This time, I hope, it keeps working, It was the CMOS battery. And, updating from the manufacturer website, this is important. I found all my software were updated. They had the most recent drivers, but it was wrong. A few of them had updates and I reinstalled several of them.
I hope this helps you and you find the solution for your particular version of this monstrosity.
You can find scores of pages of people suffering it, but all the manufacturers involved, deny it and clean their hands, because their equipment is ok.
But Windows, Graphics card and the least guilty of them, Your PC manufacturer or Monitor Manufacturer are the least guilty ones.
I also forgot many experts will tell you to check your cables.
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