LOOKING FOR job was told I have a criminal back ground which I don't , how can I fix this been to DPS.they cant do nothing .

I assume from your question that you know what is on your record. If not, you are entitled to a copy of it.  You may have to pay a small fee.  Once you know what conviction is on your record, you need to visit with a criminal lawyer in the county in which the conviction originated.  Some convictions, but not all can be expunged or ordered not to be disclosed.