Question What is the cause of my dell inspiron 3464 flashing on the screen?

[kolux]

After turning on the computer, the screen flashes red, green and white and then goes blank.

 

[Ralston18]

Update your post to include full system hardware specs and OS information.

PSU: make, monitor, wattage, age, condition?

Disk drive(s): make, model, capacity, how full?

Monitor: make, model, age? What connectivity is being used.

Try booting into Safe Mode.