Windows 7 - something bad happened to my system

hi everyone,
i have a huge problem.
after my onbaord network input cable went bad after got hit from electrecy failure , i went back to pc store where i stil had a warranty and replaced my p55m-ud2 gigabyte motherboard.

thing is that i had to bring only the MB and i disaדsemble it by myself and than assemble it by myself.
i than turn on my pc and it startup windows 7 but after 2 minutes everything stuck and nothing is working, not keyboard not mouse nothing . picture is just forzen.

until the pc freezing i had the time to went to device manager and i see that there is nothing in (!) or (?)
everything is ok.

what could it be?
is it could be due to processor that wasnt placed right? video card ?
is there a possibility that i put the processor in the wrong way and pc will work and windows 7 will start up ?


please advise ?

Take a look at this tutorial:
Windows 7 Installation - Transfer to a New Computer
or
Run Paragon Adaptive Restore CD on the new PC, before starting up for the first time,
be sure to have the drivers at hand, as you may need to add the drivers to your old Windows installation.

I'm a little confused. The motherboard you exchanged and the one in your system specs are different chipsets. Is this a different computer we are talking about or did you change more than the motherboard? When you returned your Gigabyte p55m-ud2, what motherboard did you replace it with? I would suggest you follow theog's advice closely. It would help if you gave us a little more information about the computer you are having trouble with.

did you clean off the old Thermal paste from the heatsink and cpu? also did you put new Thermal paste back on the cpu?
another thing you may want to look at is did you plug your fan in and is the heatsink set right on the cpu.

scrooge

fibola,
I suggest you post your problem in our Crashes and Debugging forum.

When you do it is imperative that you post according to their procedure given there. Without the file which the procedure requests, then just between you, me, and the fence post, then hell might freeze over before you get an answer. In other words, the info they request is a must for them to be able to help you.

A freeze is a crash.

the new motherboard are excatly the same.
there was an old thermal paste that left on the cpu and i didnt renew it .
as for the cpu fan , i have a cooler placed on it and a fan that placed on the side of the cooler.

by the way at safe mode with network access pc wont stuck.

anytime you remove the heatsink form the cpu you need to clean all the old paste off
and replace it with new.

scrooge

if you don't know how to apply thermal paste, maybe this will help. And make sure the fan for the CPU cooler is plugged into the CPU Fan slot on the motherboard.

fibola,

Follow the good, solid, and experienced advice you have received and clean off the old paste and apply fresh paste.

i will.
is it possible that because i didnt clean the old one and placed a new the pc stuck.
what about the fact that at safe mode it didnt ?

ok ive just put the cooler paste and it continue to freeze.