: Faulty RAM sectors or bad sectors on the hard drive. Should You Download isdone.dll?
If the Isdone.dll or Unarc.dll files are present but not working correctly, you can manually re-register them in the Windows registry. Open the as an Administrator. Type regsvr32 isdone.dll and press Enter. Type regsvr32 unarc.dll and press Enter. isdone.dll download windows 7 64 bit