Old Dell 8250 screen don't turn on at all. power light keeps flickering

Gary Reeds solution above is good. Plus if you have a different monitor in the house, try that just to see if it's really just your monitor that isn't working. Check all power connections on both ends and at both sides of the transformer o the cord. You'd be amazed how many people don't think of checking that .Check the connections of your monitor too, of course. Does your tower make any sounds at all? Can you play a music CD just fine? (Do you have PC set to auto-play a music CD if you insert a CD?) If it's your power cord that's an easy to replace thing. Cost isn't low but... If it turns out not to be any of the above, call a few repair shops, tell them your problem, & ask if they can check the monitor, how much they charge, and also ask if they have used monitors for sale. Many do. They may even have you take PC in & check it with a different monitor, as the shop I used to use did. You'd also be amazed how many shops just try to sell you a new PC, no matter what's wrong with yours. Beware. :) I hope you find an easy solution.

Hi Natalie,
It sounds like the monitor has come to the end of its life cycle....You can verify that the monitor is bad by connecting it to another PC or Laptop using a VGA monitor cable, and seeing if it does the same thing.

Gary