I have 4 SATA hdd drives. One is a Seagate 1TB. Recently I have had a curious (to me at least) recurring symptom. My drives are split into partitions. Just one of the drives partitioned into three "drives" upon cold boot triggers the pop-up panels that appear when a removable drive has been attached "hot". My Kaspersky Internet Security then asks me if I wish to have these drives scanned for the usual nasties. i.e. the machine really does believe that this hdd is actually 3 removable drives all of which have just been plugged in. NOT TRUE. The drive is on one of my SATA Mobo connections and has functioned normally for a year or so. The second hint occurred yesterday when suddenly I heard a regular, quiet tick emanating from my PC case. Now many years of experience tell me that a noise from a PC case which has never been heard before usually spells forthcoming trouble. 30 minutes later I suffered a BSOD IRQL_NOT_LESS_OR_EQUAL Stop 0x0000000A event. Can an expert confirm what I believe to be a failing hdd is the sensible diagnosis? I have regular backups so can restore to a replacement hdd if that becomes necessary.