I can't install windows 7 64 bit on my PC

Why not stay with the 32 bit version since you only have 4GB of ram.

arecki1995 said:

Hi everyone
I've big problem.I try install windows 7 x64 (msdn version), but this doesn't work.
Screen show me PAGE_FAULT_IN_NONPAGED_AREA.
I haven't problem with 32 bit version, 32 bit always works.
I try many version w7, but but neither version doesn't work.
I attempt to disconnect external devices, i tested memory and hdd.
My specs:
CPU AMD Athlon ii x2 250
MOBO asus m5a78l-m lx3
4 gb ram ddr3 kingston
hdd 250 gb seagate baracuda
PSU ocz 500w
GPU hd 6770 asus

Where did you get this copy of Windows as it is a Microsoft Developers Network one & requires a licence subscription.
Are you a MS Developer?. If not & you bought it on the internet it is probably an illegal one.

arecki1995 said:

I have original product, but i wanted try other version.
I lost hope for x64 system
Nobody can help me

I have a laptop with Win 7 64 bit and a desktop with Win 7 32 bit. I can't tell a bit of difference between the two. You are not going to see any difference that you will notice. I would advise you get the 32 bit going again since it sounds like you are using the MSDN version illegally.