Wii console won't play any games?

Well I haven't played my Wii in awhile and decided to get back into my routine of playing. I put in my guitar hero disc that I played for a long time and it said 'cannot read disc' so I cleaned it and since there was a little bit of scratches I put it back in (i put it in the right way) When it said 'unable to read disc' again. I found my newer game that i played 2 times total and had no scratches on it, made sure it's clean and put it in. IT GAVE ME THE SAME MESSAGE! Before the update it worked fine. Is it because of the update or do I have to get my wii fixed? (PS. I used to be able to play burnt discs on my wii)

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