I have an HP w1907 monitor. After initial warm-up the monitor screen suddenly rotated 90 degrees to the left. I selected the HP My Display icon, selected Options, but it didn't show/have the 90 degree pivot orientation selection. My desktop model is an HP Pavilion a6700y with Windows Vista Home Premium (5 years old but working flawlessly). There are no error messages and no previous issues with the monitor. Any suggestions??
Thank you.