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Windows 7: new assembled pc pls help


29 Apr 2012   #1

windows ultimate x64
 
 
new assembled pc pls help

i recently bought an asus p8h67-v board and intel i3 2120 cpu. 450w power supply. i connected everythng. when i press the power button it doesnt start. but when i pull gently on the pwrest and hdd led cables the fan of the cpu starts, when i let go it goes off. pls help.

My System SpecsSystem Spec
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29 Apr 2012   #2

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by ciah View Post
i recently bought an asus p8h67-v board and intel i3 2120 cpu. 450w power supply. i connected everythng. when i press the power button it doesnt start. but when i pull gently on the pwrest and hdd led cables the fan of the cpu starts, when i let go it goes off. pls help.
It sounds like there is a faulty connection either inside the power supply or at the termination point of the led cables. I would try a different unit and see if that solves the problem. A 450 Watt unit is on the lower side of the wattage scale, I generally go with 600+.
My System SpecsSystem Spec
29 Apr 2012   #3

Win 7 Pro x64 SP1, Win 7 Ult x86 SP1
 
 

Hello ciah and welcome to Seven Forums.

I'd re-seat everything including all cables, cards, memory, PSU, etc., ...

You could also try dis-assembling and "breadboarding", to test components / electrical shorts.
Something might be shorting because of a loose screw, standoff, solder joint, bad connection, ...

Here is one link to help explain breadboarding - Google is your friend and can find you a lot more.
Breadboarding - General-Homebuilt - Homebuilt-Systems

If it's QUALITY PSU 450 might be ok...If it's NOT quality, no telling...
You should fill in your System Specs to help determine what power you need...
My System SpecsSystem Spec
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29 Apr 2012   #4

Windows 7 home premium x64
 
 

Yes it always a good idea to buid the major components out of the case on an insulated surface, otherwise if you get problems as in your instance you really have to take it all out the case to check for shorts. At least if it was ok before when out of the case then you really only need make sure the mobo is on the stand offs and nothing is touching the case.
My System SpecsSystem Spec
30 Apr 2012   #5

windows ultimate x64
 
 
thanks guys.

i did exacly as guys suggested and built all the major components outside the tower, and it worked, it turned out that the motherboard was touching the case with the cpu socket. thats why it kept switching off. thanks alot guys........................
My System SpecsSystem Spec
30 Apr 2012   #6

Win 7 Pro x64 SP1, Win 7 Ult x86 SP1
 
 

You're welcome and glad you got it sorted out!
My System SpecsSystem Spec
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 new assembled pc pls help




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