I took the cooler off my E4300 earlier to redo the thermal paste (and took the CPU out to clean it better), put it all back together and was greeted with.. nothing but fans spinning and a black screen. Cleared the BIOS and it booted but was only showing half the memory. Swapped the sticks about and one of them's now dead. Total coincidence? It's the second time in a month that a stick's suddenly died for no apparent reason, despite previously passing runs with Memtest and Orthos without a hitch