What may be happening here is that Windows Update has installed an incorrect driver for your video solution. I suggest that you go to the downloads page for your board's manufacturer and download the latest Intel HD Graphics driver that is provided there and install it (likely will need to do this in Safe Mode). If this works, then you will want to block Windows Update from downloading this bad graphics driver.
Hope this helps,
Thanks for answer, but i forgot say, that i tryed not only automatic way, i tryed do it myself using .zip and from control panel->found driver on PC
Tryed full driver for processor (video + audio drivers) and 2 versions only for graphical 4600 (latest and old driver)
Allweys same result, as soon as driver start work and i not in safe mode "No signal ..."
This message was posted on behalf of Intel Corporation
Thank you for contacting Intel® technical support. I will be more than happy to help you. I understand that you are having issues with an external display no longer being detected your system, and that the Intel® HD Graphics 4600 driver is not active.
The driver for the Intel® HD Graphics 4600 controller in the Intel® Core™ i5-4400E Processor is only supported in Windows® 10. I see that you mentioned that you tried to upgrade to Windows® 10; if you have already upgraded the operating system, then I would suggest running a manual installation of the graphics driver.
Please follow these steps in order to update the graphics driver:
- Download the graphics driver ZIP file: https://downloadmirror.intel.com/26984/eng/win64_1540136.4703.zip
- Unzip the file to a designated location or folder.
- Right-click Windows Start icon and open Device Manager.
- Click Yes when prompted for permission from User Account Control.
- Expand the Display adapters section.
- Right-click the Intel® graphics entry and select Update Driver Software.
- Click Browse my computer for driver software.
- Click Let me pick from a list of device drivers on my computer.
- Click Have Disk
- Click Browse.
- Access the designated location or folder, and access a folder called Graphics.
- Select the file called igdlh64 or igdlh
- Click Open, then click OK, and finally click Next. Drivers are now being installed.
- Reboot your computer when prompted.