[SOLVED] Problem - 2nd PC screen shows shadows on all items

[Wonder_Owl]

Problem:
Shadows close to and on both sides of text, folder icons, windows etc. that make everything seem blurry. Only affects the old 60 Hz 1920x1080 Philips 230C1HSB/00 monitor I use as an extended desktop next to my newer 144 Hz 2560x1440 Samsung c27hg. These shadows are live (move with objects on the screen) and not visible in screenshots. I haven't tried this 2-monitor setup before.

Photos:
First photo shows the shadow, second the difference between the actual image on the old screen on the left, and the screenshot on the new screen on the right.

• https://www.dropbox.com/s/p9682wuq6c37d1i/IMG_20190925_151601.jpg?dl=0
• https://www.dropbox.com/s/pnxcop33u9d6j8o/IMG_20190925_140608.jpg?dl=0

• Both monitors are connected to an RTX 2070, the older Philips with hdmi and the newer Samsung with displayport.
• GPU driver is the newest 436.30 version. Haven't tried rolling back yet.
• Going through devices and printers -> Philips 230c -> hardware -> properties leads to Generic Pnp Monitor Properties the driver of which is from 2006 and provided by Microsoft. Philips has a Vista 2009 driver for this monitor (https://www.philips.co.uk/c-p/230C1HSB_00/brilliance-lcd-monitor/support) but I don't know if it could be used to replace the now installed Windows one.
• On the events tab I see messages saying "device not migrated" with following information:
  • Device DISPLAY\PHLC02C\5&3510625d&0&UID4354 was not migrated due to partial or ambiguous match.
    
    Last Device Instance Id: DISPLAY\PHLC02C\1&8713bca&0&UID0
    Class Guid: {4d36e96e-e325-11ce-bfc1-08002be10318}
    Location Path:
    Migration Rank: 0xF00000000000F100
    Present: false
    Status: 0xC0000451

Any clever ideas what might be the cause/solution?

More system specs below:

Computer
Mainboard : ASUS P8Z77-V LK
BIOS : AMI (OEM) 0210 03/12/2012
Total Memory : 16GB DIMM DDR3

Processors
Processor : Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz (4C 4.22GHz/6.49GHz, 4.22GHz IMC, 4x 256kB L2, 6MB L3)
Socket/Slot : FC LGA1155

Chipset
Memory Controller : ASUS Core (Ivy Bridge) DRAM Controller 103MHz, 2x 8GB DIMM DDR3 1.37GHz 128-bit

Memory Module(s)
Memory Module : Kingston KHX1600C9D38G 8GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-25 4-34-10-5)
Memory Module : Kingston KHX1600C9D38G 8GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-25 4-34-10-5)

Video System
Monitor/Panel : Samsung C27HG7x
(2560x1440, 27.0")
Monitor/Panel : Philips 230C
(1920x1080, 23.0")
Video Adapter : NVIDIA GeForce RTX 2070 (36CU 2304SP SM6.2 1.41GHz/1.62GHz, 4MB L2, 7.9GB 14GHz 256-bit, PCIe 3.0 x16)


Graphics Processor
CUDA : NVIDIA GeForce RTX 2070 (2304SP 36C 1.41GHz/1.62GHz, 4MB L2, 8GB 13.6GHz 256-bit)
OpenCL : NVIDIA GeForce RTX 2070 (2304SP 36C 1.41GHz/1.62GHz, 1.1MB L2, 8GB 13.6GHz 256-bit)
D3D 11 : NVIDIA GeForce RTX 2070 (2304SP 36C 1.41GHz/1.62GHz, 4MB L2, 7.9GB 13.6GHz 256-bit)
OpenGL : GeForce RTX 2070/PCIe/SSE2 (8GB)

Storage Devices
Samsung SSD 840 EVO 500GB (500.1GB, SATA600, SSD, OPAL) : 466GB (E
Samsung SSD 860 EVO 1TB (1TB, SATA600, 2.5", SSD, OPAL) : 932GB (C
Optiarc DVD RW AD-7201S6 (7.7GB, SATA150, DVD+-RW, CD-RW) : 7GB (D

Logical Storage Devices
Storage 840 evo (E : 465GB (NTFS, 4kB) @ Samsung SSD 840 EVO 500GB (500.1GB, SATA600, SSD, OPAL)
Hard Disk : 500MB (NTFS, 4kB) @ Samsung SSD 860 EVO 1TB (1TB, SATA600, 2.5", SSD, OPAL)
Hard Disk : 524MB (NTFS, 4kB) @ Samsung SSD 840 EVO 500GB (500.1GB, SATA600, SSD, OPAL)
Local Disk 860 evo (C : 931GB (NTFS, 4kB) @ Samsung SSD 860 EVO 1TB (1TB, SATA600, 2.5", SSD, OPAL)

Peripherals
LPC Hub Controller #1 : ASUS Panther Point LPC Controller
Audio Device : ASUS Panther Point High Definition Audio Controller
Audio Codec : Realtek Semi High Definition Audio
Audio Device : MSI High Definition Audio Controller
Audio Codec : nVidia GeForce 7800 GS
Serial Port(s) : 1
Disk Controller : ASUS Panther Point 6 port SATA AHCI Controller
USB Controller #1 : ASUS Panther Point USB xHCI Host Controller
USB Controller #2 : ASUS Panther Point USB Enhanced Host Controller #2
USB Controller #3 : ASUS Panther Point USB Enhanced Host Controller #1
USB Controller #4 : MSI NVIDIA USB 3.10 eXtensible Host Controller - 1.10 (Microsoft)
USB Controller #5 : ASUS ASMedia XHCI Controller
SMBus/i2c Controller #1 : Intel ICH SMBus


Network Services
Network Adapter : Realtek PCIe GBE Family Controller (Ethernet, 1Gbps)
Network Adapter : TAP-Windows Adapter V9 (Ethernet)
Wireless Adapter : ASUS PCE-N53 300Mbps 11n Dual band Wireless LAN PCI-E Card

Operating System
Windows System : Microsoft Windows 10 Personal 10.0.18362
Platform Compliance : x64

 

[Lutfij]

Did you use the Philips monitor standalone and tried with another cable?

 

[Wonder_Owl]

Did you use the Philips monitor standalone and tried with another cable?

Using only the Philips monitor or changing the hmdi cable makes no difference. The same cable in the other monitor also works just fine.

I also tried with only the older Philips connected to the GPU and the BIOS screen doesn't have this shadow effect. Can we safely say it's a software issue then?

 

[Wonder_Owl]

Turns out just resetting the display settings did the trick and now the shadows are gone.

Kinda hard to guess as I hadn't touched the settings but at least its working again