ALL NORMAL SYSTEMS DOWN OPERATING IN SAFE ONLY

DEAR TECHS I HAVE A DELL DEM 4500 WITH WINDOWS XP SP 2 IT HAS A 111GB DRIVE. A WEEK AGO MY APRICORN EXTERNAL HD 500 GB WENT MISSING ON MY COMPUTER IT NO LONGER WAS VISIBLE ANYWHERE ON MY COMPUTER. DELL FINALLY GAVE UP I NOW OWN A ROCK. SINCE THEN ONE THING OR ANOTHER. HAS GONE DOWN ON THE MAIN SYSTEM TONIGHT I TRIED TO RESTORE THE COMPUTER TO AN EARLIER REGISTRY WITH MY SYSTEM MECHANICPROGRAM'S REGISTRY BACKUP. WHEN IT STARTED TO BOOT UP A BLANK SCREEN APPEARED. IT WILL SHOWED THE DELL SCREEN. THEN NOTHING. IF I TURN IT OFF MANUALLY THEN HIT F8 IT WILL GO INTO SAFE MODE. SYSTEM RESTORE DOES NOT WORK. NOR DOES CLEANING THE REGISTRY REPARING THE REGISTRY ECT. I HAVE HUNTED AND GOOGLED. NOTHING SEEMS TO FIT EXACTLY SO I AM HOPING SOME ONE CAN TALK ME THROUGH THIS. MY EXTERNAL HD SEEMS TO BE A ROCK NOW. I CANT LOSE THIS ONE. THANK YOU LARRYPASHA

Larry, You have posted twice in the same forum with the same query. I have answered your other post.