Waterlily:
Poor PC. 
Hope you get it sorted quickly!!
Thankee Lily, that's just the way things go with PCs, not a question of if they will give trouble, but when!
At least it wasn't the hard drive this time as that can be even more of a pain.
Horrible sound PC makes when the memory dies, the PC tries to restart repeatedly, not good for the hard drive either.
P.S. BSOD for those who haven't had their coffee yet, Blue Screen Of Death.
Guard, 65.
Stay frosty.