.... I've this one Dell laptop running XP that need to maintain, and although it takes 90% of all of my admin time, can't get rid of it for various unfortunate reasons. Well, during the last couple of months it's developed another annoying problem, that being abrupt and intermittent shutdowns. The shutdown in this case means that the 'thing' completely loses power in about a sec, like turning the on-off switch (which should be ok btw). The occurrence is irregular, when been trying to figure it out sometimes it occurs several times a day, at times goes several days without (with the same basic process etc. configuration, nothing can think of differing in operation). Does anyone have any experience about this sort of a problem? I've tried several 'avenues' but so far don't seem to be any closer to a solution. On hardware side have run every diagnostic can think of, the unit has had it motherboard replaced (for other reasons) during the occurrence of this, can't seem to find any error related to temperature sensoring or fans, battery connection seems to be ok (or seem to & haven't had any difference in operation with another battery or when hooked (and not) up). On OS side have gone through all drivers, configuted drivers & system settings which might cause a shutdown on failure etc. (which imo isn't the case here), ran AVP scans with 2 different software, same for spyware, no unfamiliar processes up and overall don't seem to find anything conflicting in the system (have disabled any non vital service usually affiliated with shutdown problems). One problem is that absolutely no clue & trace can be found from any logs after the fact (the system is about a year old M60 laptop, everything starting from BIOS, OS etc. is up to date - the only thing Dell can recommend is another motherboard change). Any ideas or experiences which might help?