New cpu, computer shuts off after 2 seconds Tags: CPUs Pentium Computer Last response: February 26, 2010 2:22 PM in CPUs Share Anonymous a b à CPUs February 26, 2010 10:50:01 AM Hello, got a new cpu upgrade, replacing my old pentium d 805 with a core 2 duo e7500. when I insert the new cpu the computer simply turns itself off 2-3 seconds after pressing power button. before it shuts off it seems to be working fun, fan turning etc. If I put my old cpu back in it boots fine, the heatsink is fine, thermal paste etc all check + old cpu still boots so... what could be the problem? can it be my MB doesn't support core2duo? pentium d and core2duo is same socket so I doubt that. please help. More about : cpu computer shuts seconds jsc a c 172 à CPUs February 26, 2010 10:59:45 AM Having the same socket in common is no guarantee that the motherboard will support a particular CPU. Anonymous a b à CPUs February 26, 2010 11:22:40 AM how can I check that the MB supports it? Related resources Computer Build: System shuts off seconds after turning on - Forum Help: Computer Build: System shuts off seconds after turning on - Forum New Build shuts off after 7 seconds - Forum Computer shuts off after 5 seconds , no beeps - Forum Computer shuts off after 3 seconds - Forum Can't find your answer ? Ask ! Get the answer Anonymous a b à CPUs February 26, 2010 11:36:18 AM seems you were right, I just assumed that same socket = support. a) Lesson learned b) the weird thing is my mobo supports all the core2duo's up to e6850, but not above it, like my e7500. what is that? someguy7 a b à CPUs February 26, 2010 2:22:57 PM 65nm 6850. 45nm e7500. Is the main change. There are others as well. Can't find your answer ? Ask ! Publish Related resources: ForumPC shuts off after literally 2 seconds , bios doesn't load. ForumComputer shuts off after 15 seconds Forumcomputer shut off after 2 -10 seconds ForumMy computer starts and 2 seconds later beeps and shuts off ForumNew 775 motherboard computer boots for a few seconds then shuts off ForumComputer keeps shuttng off after 5 seconds with new psu ForumPC Shuts Off After 10 Seconds ForumComputer shuts down seconds after starting ForumComputer shuts off seconds after power on, then resumes ForumMy Computer Turns On For 3 Seconds , Then Shuts Off ForumBest Cpu cooler for ~40 ForumHow can i control my computer temp ForumBuilding New Gaming PC ForumIdeal Processor for Multi-Monitor Computer ForumToshiba Satellite shuts off unexpectedly More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !