I have a MSI 870-G45 mb with 1/8"  sound input/output  jacks.
I am RUNNING Windows 7 64 bit  with SP/1
I have my "Line-in jack connected to a CD player

When I assembled this machine three years ago I could play tapes, CDs etc through the line-in jacks and it worked perfectly.  I could listen or RECORD as I wished.  Recently I had to reformat and restore Windows 7 because off some serious problems that I had.   Since then my "Line-in" feature is "unavailable".    If I fool around with it LONG enough sometimes I might do something and it starts to work again.  I never know for sure what it was that I did.  BUT the next time that I boot up, it's RIGHT back to "unavailable".   

Can anyone help me.  It is very frustrating.      I am tempted to buy a "Sound" PC card but i would RATHER not if it can be helped.   Thank you for reading this.   
When you re-installed did you remember to re-install ALL the drivers from the MBoard driver  CD ? ?
If you can't find the CD they will be at the MBoard manuf. site under your Model # and the Win version.

Chipset drivers go 1st...then re-boot and then all others.Okay, I'll try that.  Thank you Patio.  I'll let you knowPATIO:   Thank you so much.  I found the DVD that came with the MB.  Evidently I didn't uses it when I assembled the machine and I don't know what I did right but it is now working (better than before).  Once again you guys at CH have saved my bacon.  I don't know what I would have done these past few years without your help.  Bless you all,  JIMGlad to hear you are all fixed up...