Computer problems

All the photos in every program I use are so dark, that it's impossible for me to post pictures right now even though I've finished my contribution to Vicky's block in the Pines group and have pictures of three cakes that kept me busy all day today, so I have lots to show and tell. My son and family have driven up from Quebec and we're all getting together on Saturday at my daughter's. She thinks my problems stem from a dying monitor. She has a spare one and has offered it to me.