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Computer stars and after few seconds its shutdown

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October 26, 2011 4:23:10 PM

Hi,
i changed motherboard of HP dv600 but when i start the computer but after few second its shutdown. Fan working properly, no beep sound heard, i want to ask you is there any setting in BIOS or is the processor paste or something else.

a c 121 V Motherboard
October 26, 2011 4:37:05 PM

Did you change the Thermal Paste on the processor?

If not, the CPU will overheat almost immediately and shutdown to prevent damage.
a b V Motherboard
October 26, 2011 4:41:08 PM

totally agree with @itzdanielp because a friend if mine also having this problem when he changed paste his problem was solved.
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October 26, 2011 5:57:50 PM

Another possibility is an incompatibility between your existing PSU and the new motherboard.

Such an incompatibility can produce lots of different symptoms e.g. fans turn but no POST,
almost instant shutdown, auto-restarting by the BIOS, or just simply lights and fans ON
momentarily but then total shutdown in about 1 second.

A shutdown in about 1 second usually means that an input DC voltage is out of range
i.e. defective PSU.


I had a similar problem recently with a new ASRock micro ATX motherboard and
an older ATX PSU: when I changed the PSU to a more modern one, that motherboard
booted up AOK with no other changes: the odd thing was that all fans were turning,
but there were no beeps and I could not reach the BIOS.



MRFS

October 28, 2011 1:38:14 PM

problem has solved ... thank you ... it was about paste on processor
October 28, 2011 1:39:06 PM

itzdanielp said:
Did you change the Thermal Paste on the processor?

If not, the CPU will overheat almost immediately and shutdown to prevent damage.




thank you for your big help...

a b V Motherboard
October 28, 2011 1:39:57 PM

so that's what i told you it was just paste problem.:)  :) 
October 30, 2011 8:53:08 PM

pro-gamer said:
so that's what i told you it was just paste problem.:)  :) 



yes Boss..... ;) 
!