You better change your post title, no BIOS will cause no nothing to work. While you do explain it in your post, the answer is get a bios if there is any thought.
Next, you can borrow or swap a CD/DVD(DVD-ROM is required at least) drive from some working PC for the time being??? If yes, then you can proceed if it is the type you need and load whatever into the troubled PC and go from there. If in US, local Goodwill may have one sitting on the shelf(not always) or local shop for older or used drive. of course, online or local a new drive is MUST if you plan to continue using the PC.Of course, the mtrbd. *may have* a bad port for CD drives if as you're explained this is an older PC. I would think a PC that supported Vista if that was initially locaded on the PC will have USB support, so exactly what is this model# HP PC?
Windows Vista 32-bit OEM
How would one go about repairing/reinstalling on an older Desktop that no longer has a working Optical DVD Drive, and BIOS that don't support USB booting. The BIOS are the latest release for the Motherboard so I know the BIOS don't support flash drives. I know there are External Optical Drives, but I think those connect to USB right? taking me back to square one. The computer still performs quite well, but not enough that I want to upgrade internal devices on the computer anymore. Perhaps a device that can help me out. Any help would be greatly appreciated.