Asus M5A97 EVO vs 8Gb

[talesus]

I started building a new PC:
AMD FX 6100
Asus M5A97 EVO
8Gb (2x4) Corsair Vengeance (CMZ8GX3M2A1600C9)
Sapphire ATI Radeon HD 4870
WD Black Caviar 1 TB HDD

Everything went fine, the motherboard correctly detected the ram on two slots, but POST only show 4080MB of RAM avaliable.
The memory remap is enable. I tried to disable it, but system doesn't boot.
Trading memory between slots A2 and B2 to A1 and B1 result the same way.
I left all configurations set to default/auto in BIOS/UEFI, and it's updated.
Anyone know what I need to do to use all of 8Gb?

Thanks

 

[nikorr]

Reset the CMOS memory the right way as is described in the motherboard manual using the clear CMOS link with the power cord unplugged.
And when the battery is out, press the power button to discharge all the electricity from the system.
How To Clear CMOS @ http://pcsupport.about.com/od/fixtheproblem/tp/clearcmos.htm
[flash=480,270]http://www.youtube.com/v/rdHH9KrceR0?version=3&feature=player_detailpage[/flash]

 

[nikorr]

Do u have x64 bit windows?

 

[talesus]

Do u have x64 bit windows?

The problem is before windows load.

 

[talesus]

Reset the CMOS memory the right way as is described in the motherboard manual using the clear CMOS link with the power cord unplugged.
And when the battery is out, press the power button to discharge all the electricity from the system.
How To Clear CMOS @ http://pcsupport.about.com/od/fixtheproblem/tp/clearcmos.htm
[flash=480,270]http://www.youtube.com/v/rdHH9KrceR0?version=3&feature=player_detailpage[/flash]

I need to reset CMOS at least twice last night, when I tried to disable the memory hole option and PC not boot.
I don't understand why BIOS detect the two modules and summary it wrong.

 

[talesus]

I see many other posts with similar problems, but without solution.
Any idea?

 

[talesus]

Problem solved.
One of the memory modules was damaged.

Thanks to all.

 

[nikorr]

Yes, its common issue : )

Its usually the PSU #1, RAM #2.

Good luck in solving it.

 

[nikorr]

Best answer selected by Nikorr.

 

[nikorr]

This topic has been closed by Nikorr

 

[nikorr]

This topic has been closed by Nikorr