Ever since I've been using broadband, my PC crashes for no apparent reason. It either goes blank and re-boots or locks up for a few seconds before going blank and re-booting. If I was using it all day (which, thankfully I'm not) then I'd estimate that it would crash at least 5 times. This, as you can imagine, is quite annoying. The machine is getting on a bit now (IBM Aptiva, 333 processor) but I've upped the memory to 256mb (it was only 64mb) in an attempt to cure the problem. It didn't work. I've tried the various other tricks - defrag etc. but it still crashes. Can anyone help. Thank you very much. Matt.