it is telling me to check cable connection/ no bootable device
when i turn on my acer laptop it is popping up Intel UNDI, PXE-2.0 (build.083) copyright (c) 1997-2000 intel corporation For Atheros PCIE Ethernet controller v126.96.36.199(11/02/
Your computer is not seeing a usable operating system and may have a bad hard drive. Try booting to a system disk. If it boots to the system disk you probably need to replace the hard drive. First try repairing the disk with the system disk. If repair works I would seriously consider backing up my data and replacing the drive as it may be in the process of dying.