PXE-E61: media test failure, check cable PXE-M0F: Exiting Intel Boot Agent

There's something wrong with the connection between your hard drive and motherboard. I'd suggest opening your computer up (if warranty no longer applies), unplugging then replugging the HDD.

reli? i have that checked by a technician, there is sound on the hard disk...he said HD is broken & needed to be replaced..so i bought a new one...& replaced it..i now have the UPS because i suspect frequent power failures cause the damage...thanks to the help...i really appreciate it..more power to u!