Janey
what type of HDD ? IDE, SATA, and M2
Note have you tried the freezer test and not compressed old drive at all
first does new HDD supported with your bios
meaning size not a 1 terabyte drive?
and is bigger then old HDD
if yes then have new HDD clone software ready on a USB stick
install new HDD on next available port, boot with zip baggy still covering it ….. if boots then use your new HDD clone software on USB stick to format new drive and clone old drive .
good luck
have everything ready by open case and install old to same wires and install new drive on next port have wires ready to hook up when take out cold HDD to computer