I am trying to extend my desktop to a second monitor. Yes, I know how it is supposed to work with the display settings, but I can not get the operating system to recognize the existence of two monitors. Let me first explain some details because my situation is not like the others. First of all, it was working and suddenly it stopped. Also, according to the Windows 10 OS, my drivers are all updated. I am also able to reboot and have the system work with either monitor and looked into either port on the video card. Please advise. The problem seems to be that the drive for the monitors does not work: I first tried uninstalling the associated software for the driver: I was wondering if there was physically something wrong with my video card. So I dusted out the interior of the CPU, disconnected the video card, sprayed "endust" everywhere and reattached the video card, but there was till the same issue. I downloaded a tool from NVIDIA that is supposed to install the proper driver. I did this and rebooted but I continued to have the same issue and nothing I did helped. There does not seem to be a graphics connection on the motherboard and so all connections to the monitor or monitors comes from the graphics card. I did a number of tests. I have confirmed that both monitors work. I have also confirmed that either connection on the graphics card will be accepted by the OS at start up. So I am puzzled. Also, the entire system was working perfectly and suddenly stopped. Does this give you any ideas of where to look now and what action I should take? From the CMD set command here is the processor information: PROCESSOR_ARCHITECTURE=AMD64 PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 60 Stepping 3, GenuineIntel PROCESSOR_LEVEL=6 PROCESSOR_REVISION=3c03 Here is the Basic information about my computer: Windows edition Windows 10 Pro System Processor: Intel(R) Core(TM) I=i5-4690K CPU @ 3.50GHz 3.50 GHz Installed memory(RAM): 16.0 GB System type: 64-bit Operating System, x64 bsed processor Motherboard: For the mother board, I typed from the command line: wmic baseboard get product,Manufacturer,version,serialnumber Manufacturer Product SerialNumber Version MSI Z87M GAMING (MS-7866) To be filled by O.E.M. 1.0 From Pinform Speccy we have this information: Operating System Windows 10 Pro 64-bit CPU Intel Core i5 4690K @ 3.50GHz 58 °C Haswell 22nm Technology RAM 16.0GB Dual-Channel DDR3 @ 933MHz (10-11-10-30) Motherboard MSI Z87M GAMING (MS-7866) (SOCKET 0) 31 °C Graphics Generic Non-PnP Monitor (1600x1200@64Hz) NVIDIA GeForce 8800 GTS (NVIDIA) Storage 238GB Crucial_CT256MX100SSD1 (SSD) 23 °C 698GB Seagate ST3750640AS (SATA) 23 °C 698GB Western Digital WDC WD7501AALS-00J7B0 (SATA) 29 °C 3GB JetFlash Transcend 4GB USB Device (USB) Optical Drives ASUS DRW-2014L1T Audio Realtek High Definition Audio RAM Memory slots Total memory slots 4 Used memory slots 2 Free memory slots 2 Memory Type DDR3 Size 16384 MBytes Channels # Dual DRAM Frequency 933.5 MHz CAS# Latency (CL) 10 clocks RAS# to CAS# Delay (tRCD) 11 clocks RAS# Precharge (tRP) 10 clocks Cycle Time (tRAS) 30 clocks Command Rate (CR) 1T Physical Memory Memory Usage 51 % Total Physical 16 GB Available Physical 7.81 GB Total Virtual 18 GB Available Virtual 8.82 GB SPD Number Of SPD Modules 2 Slot #1 Slot #2 Graphics Monitor Name Generic Non-PnP Monitor on Microsoft Basic Display Driver Current Resolution 1600x1200 pixels Work Resolution 1600x1160 pixels State Enabled, Primary Monitor Width 1600 Monitor Height 1200 Monitor BPP 32 bits per pixel Monitor Frequency 64 Hz Device \\.\DISPLAY1\Monitor0 NVIDIA GeForce 8800 GTS Manufacturer NVIDIA Model GeForce 8800 GTS GPU G80 Device ID 10DE-0193 Revision A3 Subvendor NVIDIA (10DE) Series GeForce 8 Current Performance Level Level 0 Technology 90 nm Die Size 484 mm² Transistors 681 M Release Date 2006 DirectX Support 10.0 DirectX Shader Model 4.0 OpenGL Support 3.0 Driver version 21.21.13.4201 ROPs 20 Shaders 96 unified Memory Type GDDR3 Bus Width 64x5 (320 bit) Anti Aliasing Modes -?- Filtering Modes Bilinear, Trilinear, 2x Anisotropic, 4x Anisotropic, 8x Anisotropic, 16x Anisotropic Noise Level Moderate Max Power Draw 147 Watts Count of performance levels : 1 Level 1 - "Perf Level 0" OS: Operating System Windows 10 Pro 64-bit Computer type: Desktop Monitors and resolution: There are two monitors. One is Compaq and the other is AOC Here is the informaiotn abut the AOC: Here is the information about the Compaq
