DPI problem Windows 10

Open Start > Settings > System > Display
Make sure recommended settings are selected for Scale and Layout and Screen resolution.


Another thing you can try:
uninstall your display driver then restart
Boot to the Windows 10 desktop
Press Windows key + X
Click Device Manager
Expand Display adapters
Right click the current display adapter
Click Properties
Click Driver tab
Click Rollback driver if the option is available

If not
Right click the current display adapter
Click Uninstall
Exit Device Manager
Restart

If that does not work, try performing a system restore before this problem occurred.

I recommend you uninstall the KB4048955, KB4048954 (Windows 10 1703)

Microsoft issued an update for several versions of WIndows 10: KB4048954, KB4048955 that has caused issues with display drivers. If you know the make and model of your computer, you can try manually reinstalling the driver from the manufacturers website for your video driver.

Press Windows key + R
Type: appwiz.cpl
Hit Enter
Click View installed updates
Select the recent update
(This is the update you want to uninstall KB4048955)

Right click it then click uninstall.

Restart then see if stability is restored.

The update might try to install again. So, try blocking it.

Is there an option or work around to block updates or hardware drivers that might cause problems?
Yes, Microsoft has released a KB update (KB3073930) that will let users block or hide Windows or driver updates.

You can download it at the following link:
https://support.microsoft.com/en-us/kb/3073930

If its the icons and toolbars, then Go back to Start > Settings > System > Display
Click in the Scale and layout list box, try another scale such as 125 to see if that works or play around with custom scaling.

Option 2:

Perform a repair upgrade

http://answers.microsoft.com/en-us/insider/wiki...


Other things you can try:

A recent update from Microsoft might have triggered this problem.

We are aware of a problem that resulted in an incorrect driver update for some AMD Radeon HD 2000, 3000, and 4000 series adapters. The driver update has been corrected. If you were impacted by the incorrect driver, follow these steps for all versions of Windows 10 to delete the 22.19.128.0 driver from the system and recover the recommended driver version (8.970.100.9001):

Start Device Manager. To do this, press and hold (or right-click) the Start Menu icon, and then select Device Manager.
Expand Display adapters, and right-click the adapter that has the problem driver installed, and then select Properties.
Select the Driver tab and verify driver version is 22.19.128.0.
Select Uninstall Device.
Check the box that says, "Delete the driver software for this device.” This step is important and will prevent the problematic driver from reinstalling in the future.
The system may require a reboot at this point. Reboot if needed, then reopen Device Manager.
Select any device, then click Action -> Scan for hardware changes.
If the recommended driver (8.970.100.9001) is re-installed and this resolves your graphics problems, you can stop here. (Repeat steps 1-3 to verify that the correct driver version is installed). Otherwise follow the next step to check for the driver using Windows Update.
Go to Start -> Settings -> Update & security, then Check for updates and install any available updates.

Thank you very much
I will try what you've said, and I will come back to tell you what I have solved

Awaiting your update.

It sounds like your display is working correctly. Andre's suggestion is more for a currently common problem where a recent Windows Update messed up the video driver so it was not displaying the correct screen resolution.

I don't really see the blurry part, but I'll take your word for it. So you have a blurry display and the system text is too small.

Lets start with the text size:
* right click on desktop
* select Display Settings
* You can try changing the "scaling" of objects (it is a blunt tool, but it may help a little)

* (at bottom of pane) click on Advance display settings
* Advanced Sizing of text and other items (you may not have this option)
* Under "Change only the Text Size" you can select a few items from the drop down, then change their text size. (this is better if you can get to it)

********************
An alternative is to download and install the WinAero Tweaker tool. I've used it and it does help with this issue

CHANGE ICONS TEXT SIZE IN WINDOWS 10
https://www.tenforums.com/tutorials/19768-chang...

This article includes downloadable registry hack files.
https://winaero.com/blog/tootip-text-size-windo...
This article includes instructions to do manual registry hack
Also recommends Winaero Tweaker tool. I have used it in past.

Note: in Winaero Tweaker, font changes are spread through several options to limit changes to specific features. ie under “Advanced Appearance Settings” in:
- “Icons”, change font for Desktop and Explorer icons
. - “menus” change just for menus
- “Message Font”