Have you tired to reset SMC and to clear PRAM to set default startup device to internal hard disk drive (HDD)? You also want to try to Hold the Alt (Option) key during startup and verify there is a bootable hard drive shown in Startup Manager. Choose original hard drive. Verify if system can start up from this drive. If that does not work insert product OS install disc in optical drive. Install disc is bootable and should be present in Startup Manager. Verify if system can start up from OS install disc. Let us know what you find.
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swimmer35 , you did not tell us if you already tried to reset SMC and to clear PRAM to set default startup device to internal hard disk drive (HDD)? You also want to try to Hold the Alt (Option) key during startup and verify there is a bootable hard drive shown in Startup Manager. Choose original hard drive. Verify if system can start up from this drive. If that does not work insert product OS install disc in optical drive. Install disc is bootable and should be present in Startup Manager. Verify if system can start up from OS install disc. Let us know what you find.
Have you tired to reset SMC and to clear PRAM to set default startup device to internal hard disk drive (HDD)? You also want to try to Hold the Alt (Option) key during startup and verify there is a bootable hard drive shown in Startup Manager. Choose original hard drive. Verify if system can start up from this drive. If that does not work insert product OS install disc in optical drive. Install disc is bootable and should be present in Startup Manager. Verify if system can start up from OS install disc. Let us know what you find.