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Windows 7 64bit memory problem

Last response: in Memory
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January 10, 2014 7:47:32 AM

Hello,
I just bought a new desktop with a gigabyte GA-990 UD3 (rev 4.0) motherboard and with 8gb ram but somehow it says that only 3.96gb of ram is usable.
Anyone has a solution?

Solutions that did not work!
1) Unticking the maximum memory in msconfig
2) Updating Bios
3) Replugging the memory in different locations. (So i guess it must be a software problem)

Feel free to post any ideas.
Thanks
a b $ Windows 7
a c 1983 } Memory
January 10, 2014 10:27:25 AM

What OS, sounds like you may be running a 32bit OS, if so, it can only use up to about 4GB
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January 10, 2014 10:32:14 AM

Tradesman1 said:
What OS, sounds like you may be running a 32bit OS, if so, it can only use up to about 4GB


I am using windows 7 ultimate 64 bit
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 10:37:20 AM

Try going into BIOS and raising the DRAM voltage + 0.06
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January 10, 2014 10:41:59 AM

Tradesman1 said:
Try going into BIOS and raising the DRAM voltage + 0.06


I can only make it 1.510 from 1.500V is it ok to proceed?
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 10:50:36 AM

Yes, should allow to step up higher, either manually typing it in or maybe using the arrow keys to get to 1.55- 1.56
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January 10, 2014 10:58:09 AM

Tradesman1 said:
Yes, should allow to step up higher, either manually typing it in or maybe using the arrow keys to get to 1.55- 1.56


I put 1.56V but still it shows me 3.96gb usable from 8gb
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 11:10:18 AM

Do both sticks work by them selves in slot 1
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January 10, 2014 11:12:29 AM

Tradesman1 said:
Do both sticks work by them selves in slot 1


Yes sir, I hope we can solve this because I am becoming a bit desperate.
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 11:18:47 AM

Ok, with a stick in slot 1, and DRAM voltage still at 1.56 change the CPU/NB voltage to 1.2, save, exit and shut down, install the 2nd stick firmly in slot 3 and give it a try - if still problems may want to pull and check the CPU for bent/broken pins
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January 10, 2014 11:42:08 AM

Tradesman1 said:
Ok, with a stick in slot 1, and DRAM voltage still at 1.56 change the CPU/NB voltage to 1.2, save, exit and shut down, install the 2nd stick firmly in slot 3 and give it a try - if still problems may want to pull and check the CPU for bent/broken pins


Nope didn't work, all pins are straight.
Should i keep it at 1.2 and 1.56V or should i change it back?

Any other suggestion?
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 1:54:50 PM

Can change them back, are you sure it's Win 7 64? Ultimate comes with both 32 and 64 for install? Could try in 2-4 if already in 1-3, could also try in 1-2 or 3-4 if one of theose combos work and it sees all 8 in single channel and works then might be a bad MC (memory controller)
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January 10, 2014 2:07:59 PM

Tradesman1 said:
Can change them back, are you sure it's Win 7 64? Ultimate comes with both 32 and 64 for install? Could try in 2-4 if already in 1-3, could also try in 1-2 or 3-4 if one of theose combos work and it sees all 8 in single channel and works then might be a bad MC (memory controller)


I am sure yes that it is win 7 64. I tryed now with 1-2 it gave also the same that 4gb usable only.

Do you think it might be because of the hardware? or is it software?

If i Install win8 would it work?
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a b $ Windows 7
a c 1983 } Memory
January 10, 2014 3:58:54 PM

Might, might not, don't know, we've tried most everything, if you right-click on my computer and select properties - the page should identify it as a 64 bit system (or 32)
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!