I can\'t get my CRT to load a screen

I pulled and replugged all plugs. Finally unplugged everything including PC. Began to re-plug in sequence and restarted. A screen came up so I went to safe mode and check everything. I don't know what it was but I am going to take it as a waring of things to come and off load everything I have on the PC to my TB memory and hope it lasts for 3 more months when I can change to a new computer.
Thanks all.