thinkpad boot error - displays '07 07 ...' on the screen

hi, my thinkpad t60 has devuan ascii installed along with windowsXP/freebsd. earlier this week when i opened the lid to wake it from previous sleep mode in devuan, it displayed shell instead of returning to X window. when i power cycle and reboot my t60, the machine won't boot, after logo appears on the screen, it display a bunch of '07 07 07....' on the screen, no beeps. i can get into bios and change settings, i can also boot into slackware linux installed onto an external hdd, and mounted the windows partition.

any advice? is the hdd dead?

screenshot of boot error screen.

laptop specs:
Lenovo Thinkpad T60 1.83Ghz/2G RAM/80G HDD
WinXP/freebsd/Debian8 triple boot