|1st of all it is really DUMB to post your e-mail address in a forum...you are inviting lots of spammers etc...so be prepared.|
2nd of all, sounds like the stick of ram added is dead. Why not try a memtest on the PC, run it and see if the ram is fine?
"despite the best efforts of the technician who installed it for me."
Just wondering who purchased the ram and if it was a new stick.
Some HELP in posting on Computing.net plus free progs and instructions Cheers