Lisa Robin Kelly "That 70's Show" Star Dies At 43

       

Lisa Robin Kelly, who played Eric Forman's older sister on "That '70s Show" has died. The 43-year-old actress passed away in her sleep Wednesday night at a rehab facility in California.

Kelly's agent said the actress had just voluntarily checked herself in for treatment for an alcohol problem this past week and was determined to clean herself up.

She added, "She had been fighting demons for a while and finally lost her battle."

Sources tell us Lisa had been in and out of rehab centers hoping to kick her alcohol problem ... and most recently fell off the wagon after a huge dispute with her estranged husband Robert Gilliam.

Sources say ... Kelly's estranged husband beat her last May to obtain residual money from her show. He was convicted of domestic battery last month and sentenced to 3 years probation. He also served 35 days in jail for the beating.

Lisa filed for divorce from Gilliam back in July.

We're told Lisa's new boyfriend brought her to rehab again on Monday ... but she went into cardiac arrest late Wednesday night and could not be saved.

The boyfriend blames her estranged husband for the relapse.

Kelly had been troubled for the past couple of years -- she was arrested at least 4 times in the past 3 years for DUI, spousal abuse and assault.

Source: TMZ