Okay, so a friend was complaining their laptop kept crashing; They'd be doing something then weird lines would appear on the screen, then crash.
Classic bad RAM symptoms on systems that use integrated graphics.
So to be sure, ran memtest and yup many errors.
I think I had a phone call or something then as, for some reason, I went away and forgot about it.
2 days later I remember to check it - It's been running for near enough 2 days at this point and despite racking up 90,000 errors and many fails, I noticed with interest that it had 7 passes. WTF?
So I power-cycle the machine and run memtest again - No errors!!!
Has this happened to anyone before? I had already done the usual stuff of cleaning the contacts with switch cleaner, reseating the modules etc.
The only thing that currently springs to mind is if there were some tin whiskers or something on the BGA that were creating a teeny tiny short which have been fried by the RAM being hammered for 2 days straight.
I am now not sure whether to bother replacing the RAM or not...!
I've left it off to cool down for a while now just to see if it starts failing again, but this is pretty weird; Never seen this happen before!
Edit: Fixed linefeeds...
Edited by Cyker, 13 November 2015 - 08:49 AM.