Toshiba Satellite U500 Maintenance Manual page 64

2 Troubleshooting Procedures
If any of the connections are loose, reconnect firmly and repeat Procedure 1. If
there is still an error, go to Check 2.
Check 2 The HDD/SSD may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 3.
Check 3 The Main board may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures.
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