Laptop Screen Blue Tint when plug/unplug USB's

Hi, this is my first post in TenForums!

My laptop is acting weird since a couple months ago. The first time was when I unplugged my external hdd. I noticed that the screen colors turned a bit colder, some sort of blueish tint appeared. On all this time I've noticed that this happens when:

• I plug/unplug my external hdd/mouse from the usb ports. (Sometimes this also happens when I click the option to Eject Mass Storage from the Safely Remove Hardware option in the System Tray).
• When I'm playing games / closing games.
• If I close the laptop and the screen turns off / sometimes this fix the issue and colors goes back to normal. Sometimes don't.
• Sometimes, when I turn on the laptop it starts with the blue tint and after a period of time goes back to normal by it's own.

I opened it up, it wasn't that dusty. I cleaned it up. Unppluged the monitor cable. (I havent touch the graphics card yet.) I already have all the drivers up to date. What could be the problem? I think mybe it's something related to the voltage on the usb ports but I don't know. I din't see anything wierd when I was inside.

Here are my laptop specs:
ASUS K556U
12GB RAM
NVIDIA GTX 940MX
Windows 10, 1809.

Wait until it happens again, then immediately do the following:
- open Event Viewer (run eventvwr.msc from the "Run" dialog)
- expand the Custom Views category (left click on the > next to the words "Custom Views")
- right click on the "Administrative Events" heading
- select "Save all Events in Custom View as..."
- save the file as Admin.evtx
- zip up the file (right click on it, select "Send to", select "Compressed (zipped) folder")
- upload it with your next post (if it's too big, then upload it to a free file-hosting service and post a link here).

We'll take a look at what's happening in that report and then will figure out where to go from there.

jdc1 said:

Wait until it happens again, then immediately do the following:
- open Event Viewer (run eventvwr.msc from the "Run" dialog)
- expand the Custom Views category (left click on the > next to the words "Custom Views")
- right click on the "Administrative Events" heading
- select "Save all Events in Custom View as..."
- save the file as Admin.evtx
- zip up the file (right click on it, select "Send to", select "Compressed (zipped) folder")
- upload it with your next post (if it's too big, then upload it to a free file-hosting service and post a link here).

We'll take a look at what's happening in that report and then will figure out where to go from there.

It happened right now, I followed your instructions. Here are the files.
Dropbox - Admin.zip - Simplify your life

Several User Profile Service errors, but not much information on them.
Still can't tell if it's a hardware or software problem.

Have you tried bro67's suggestions? If not, please do so and let us know the results

Once that's done, if it still hasn't fixed things - try this stuff next:
- SFC and DISM
Press the Win and X keys at the same time, it'll open up a menu in the lower left corner
Select Windows Power Shell (Admin)
Type in "sfc.exe /scannow" (without the quotes) and press Enter.
Let it run

Once finished, type in "DISM.exe /Online /Check-Image /RestoreHealth" (without the quotes) and press Enter
Let it run (it may take a long time and may appear to freeze - still let it run).

Let us know the results

After that, the next step is to try RESETs/repair installs of Windows
If that also fails - then we start looking for hardware problems.