Since the menu appears, that suggest you have a non-bootable HD. In some fashion it has ebcome corrupted or broken. You did offer it was 8yrs+. old so that seems to be it.
Do you have a "backup"? If yes and its the HD at fault, replace and reload your backup. If not, then you have 2 problems if the HD is bad. Reloading the OS, since the old HD probably contained the "recovery media" as a hidden partition on the old HD. You also, if broken HD and no backup, more than likely can't save data. Now some data recovery service is you deem data vauable to pay for that. Next, Vista being an old OS, getting an installable OS. Checkout this link and any other similar service: https://restoredisks.com/
You could select a better OS as in Win7. More than likely can install to HP as a retail/upgrade with key# version.
Now, if corrupted, try hitting the F8 key during boot, it should be allowed to enter the safe mode selection from menu. -OR- select the networking option which allows using correcting s/w to fix a corrupted HD. You can also if Vista OS disc is available to attempt a "repair" which savages the boot sector and hopefully corrects the problem if NOT a bad broken HD. Some vendors offer a "repair disc" which does the same service, but NOT install the OS. So, do you have the Vista install discs? The install disc provide the repair option as well.