hard drive stops responding

symptoms:

system installs and boots fine, everything is fine, except i get these random hangs.. no matter what i've been doing, even if no programs are running, my hdd led shows no activity, hdd does nothing, and though the system doesn't actually freeze up, i can do whatever i want, as long as that particular action doesn't require hdd activity. i can move the cursor, type, bring up start menu, even work with open applications: right until it wants to read or write from/to the hdd. then i get the busy cursor, and the waiting begins.. AND DOES NOT STOP UNTIL I DO A COLD BOOT LOSING EVERYTHING IN ALL OPEN PROGRAMS!!!!!!!!!! WHAT IS GOING WRONG???? CHKDSK FINDS NOTHING WRONG WITH MY HARD DRIVE!!!!!!

ALL FOUR OF MY HDDs EXPERIENCE THIS AT ONCE AT THE SAME EXACT TIME MY OS HDD AND THREE EXTERNAL DRIVES ALL AT THE SAME EXACT TIME!!!!!!!

Edited by Moltres Rider, Yesterday, 12:06 AM.

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/513404/hard-drive-stops-responding/