It sounds terrible. My suggestion is a few.
First, maybe partner up with someone that could supply the costs or even the expertise to do the repairs that would increase the valu9e to over what you owe. If there is equity aftwards, split it with them.
Second, maybe offer the home on a lease option or buy to own. Offering terms like this will allow someone who may not ordinarilly qualify for a home thru conventional means, the chance to own. These folks are less concerned (or should be) about the price and more focused on the opportunity you present.
Third, maybe see what the rental market offers.
Fourth, Texas is tough as they don't allow for loan to values to exceed where others will.
Fifth, if you refinance the house with a construction loan, or an FHA rehab loan, it will lend you the money to refinance existing debt, lend you the funds needed to fix the house and base the loan on the value "as improved" Meaning they will lend based upon what it's worth after the repairs.
Hope this helps. AllMortgageLoans.net