Samsung monitor S23A350H suddenly went black, I tried the monitor on different computers still the same. I found that it needed a firmware upgrade . During the upgrade, the power cable was
Samsung S22A350H 21.5" LED Backlit LCD Monitor S22A350H B&H
Intel PC - processor i5-2400 3.10Ghz, RAM 8.0Gb, Window 10 64 bit, AMD Radeon HD 6800 Series, Electronics, Computer Parts & Accessories on Carousell
21.5in Ws LCD 1920x1080 1000:1 S22a350h Hdmi/Vga Rose Black 2ms: Amazon.ca: Computers & Tablets
Samsung Syncmaster 971p Monitor (WHITE) | Monitors | Gumtree Australia Gold Coast City - Bundall | 1254947755
Samsung SyncMaster S22A350H - Three-Way 22" LED LCD Roundup: Dell, LG, And Samsung | Tom's Hardware