Root wilting/drying up...Help

[Angelmay81]

Hello! I am new the the Forum so forgive me if someone has already posted this question and I overlooked the post.

I am a beginner to orchids. My boyfriend got me my first plant for Valentines 2 years ago and a second plant last year. Both are Phals. I re-potted both plants in fresh dark bark mix about 2-3 weeks ago after noticing that the roots of the plants. Some were mushy (like they had root rot) and others were all dried up like they were not getting enough water or to much water. Now the leaves of the plant are limp and I have a gnat problem (that I did not have before I re-potted.)

Im not sure what steps I need to take in order to get them back to a healthy state. I really want to succeed in growing these orchids and would love to see them bloom again. They have not had any new spikes or growth in the last year.

I can say the I do not have a lot of natural sunlight coming in to my apartment but try to get them as much sunlight as possible in the morning.