keltoi Posted March 8, 2010 Share Posted March 8, 2010 i just replaced a fried PSU in my 2/3 years old Pentium D dual core 3GHz and when i fire it up it just switches off after 10 secs, tries to power up again, switches off after 10 secs, tries to power up again, switches off after 10 secs, tries to power up again, switches off after 10 secs, tries to power up again, switches off after 10 secs, and so on. any ideas what's going wrong? Link to comment Share on other sites More sharing options...
Guest the anonymous forumite Posted March 9, 2010 Share Posted March 9, 2010 PC subforum please Link to comment Share on other sites More sharing options...
keltoi Posted March 9, 2010 Author Share Posted March 9, 2010 kiss my pc muscle Link to comment Share on other sites More sharing options...
Guest futuregirlfriend Posted March 9, 2010 Share Posted March 9, 2010 Check that as well as the 20 pin power cable, you've also plugged the 4 pin into where that goes, if needed. Usually it's the upper left of the cpu. Link to comment Share on other sites More sharing options...
GORDO Posted March 9, 2010 Share Posted March 9, 2010 you have to wait until it switches off and on 32 times on a 32bit system or 64 times on a 64bit one, because it is booting one bit at a time, the 33rd and 65th are the charm. Link to comment Share on other sites More sharing options...
keltoi Posted March 9, 2010 Author Share Posted March 9, 2010 Check that as well as the 20 pin power cable, you've also plugged the 4 pin into where that goes, if needed. Usually it's the upper left of the cpu. the 4 pin's plugged in too. Link to comment Share on other sites More sharing options...
eugene Posted March 9, 2010 Share Posted March 9, 2010 do you see anything on the screen at all ? Link to comment Share on other sites More sharing options...
keltoi Posted March 9, 2010 Author Share Posted March 9, 2010 do you see anything on the screen at all ? no it doesn't get as far as booting up so nothing comes up on the screen... and the same thing happens without screen or anything else attached. Link to comment Share on other sites More sharing options...
azatoth Posted March 9, 2010 Share Posted March 9, 2010 sounds like the new PSU might be broken. make sure that the memory and processor haven't come lose in the swap of the PSU too. Link to comment Share on other sites More sharing options...
keltoi Posted March 9, 2010 Author Share Posted March 9, 2010 sounds like the new PSU might be broken. make sure that the memory and processor haven't come lose in the swap of the PSU too. cheers. i'll check. the old psu that i replaced started switching off randomly before it went kaput so there must be something else wrong. i'll need to take it to a shop cos i'm a noob with this stuff, but i'm skint just now so it'll have to wait. Link to comment Share on other sites More sharing options...
Hautlle Posted March 9, 2010 Share Posted March 9, 2010 either that or your new PSU is fine, but something in your mobo/cpu/RAM got fuxored by your failing PSU Link to comment Share on other sites More sharing options...
Joyrex Posted March 9, 2010 Share Posted March 9, 2010 Yep, sounds like a bad MoBo. Link to comment Share on other sites More sharing options...
Guest 277: 930-933 Posted March 9, 2010 Share Posted March 9, 2010 Maybe the socket's fucked? Which would mean getting a new motherboard... Link to comment Share on other sites More sharing options...
Guest viscosity Posted March 9, 2010 Share Posted March 9, 2010 do you hear any beeps on POST or are you sure its a power issue? if the latter I would try reconnecting but you could just have a faulty new PSU Link to comment Share on other sites More sharing options...
keltoi Posted March 10, 2010 Author Share Posted March 10, 2010 i have now tried the new psu in another machine and it works fine. bad mobo? fuckit! Link to comment Share on other sites More sharing options...
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