I have a Samsung SyncMaster 720N. The upper rows of pixels are not seen and the lower rows are left black. Auto Adjustment does not help (the buttons are messed up). Also I use a GTX 1650, and one port goes to my main monitor and the other one uses a DVI to HDMI connector which is connected to a HDMI to VGA adapter. The adapters had no problem before. The resolution is 1280x1024. Please help.