One long bleep generally, but not always signifies a problem with either the motherboard or system memory.Try changing the RAM.
AIC-78XX/AIC-75XX These refer to adaptec SCSI cards althought the second part refers to a parallel device that is detected as a SCSI device such as a scanner.
I would suggest you clear the bios on the PC by unplugging from the mains completely and then either using motherboard jumpers or removing the bios battery for a while.
Also if you have any extraneous cards inside the pc,that were added after the pc was originally put together, remove them and add back after the basic reinstall.
Additionally if the restore disk does not utilise an hidden partition on the HDD and just takes all data from the CD consider running Fdisk and format the HDD.