The think pad dead
no boot. SL500 notebook. 10 years old now? 2008 made.
no failed screen photo posted. making answers near impossible to guess what is there on screen.
PC's boot in serial sequence.
BIOS posts. (power on self test and possible errors)
then asks for BIOS PASSword (bad thing to have and forget) never turn this feature on.
then if Bitlocker was turned on you must get this password next, if lost doom it is for HDD.'
next the HDD boots the OS. (or fails with errors)
what OS is this, windows (what) or Linux (hat) or freedos, or well lots more OS.
let my guess its windows. so the next step is
windows password, is this where you get stuck.
this messages (means recovery mode) in english.
To interrupt normal startup, press the
blue ThinkVantage button"
it is the BIOS hot key for recovery.
if the bios password is not set then BIOS works.
My guess is your HDD is bad, and cant boot.
you read the manual, (did you) and see the recovery chapter. and then attempt the recovery
and that works , good, but if not that means the HDD is bad, or damaged.'
page 41 covers how to use factory recover disk
If you need help , next time tell the helper
what OS came new with PC and was it upgraded.
to say w10. WE CAN NEVER GUESS what
OS is there (operating system)
on Aug 23, 2018