Tom's Hardware > Forum > Motherboards & Memory > Memory > Memory remap BIOS feature makes Windows 7 64 bits give BSOD

Memory remap BIOS feature makes Windows 7 64 bits give BSOD

Forum Motherboards & Memory : Memory - Memory remap BIOS feature makes Windows 7 64 bits give BSOD

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eddyiek   10-06-2009 at 01:06:16 PM

Hi guys,

 

I'm having a problem with a ALiveXFire-eSATA2 R3.0 mobo: I have 4GB installed ( 4x1024 DDR2 800MHz), and i installed Windows 7 64 bits.

 

All was OK until I noticed Windows didn't recognize all of the 4GB of memory, it only saw 3.25GB. I then looked up for a solution on the forums and came up with the memory remapping option in the BIOS. I enabled it, the boot POST showed correctly the 4GB, but Windows 7 crashed at boot with a BSOD.

 

The reason was that it couldn't load the graphics driver. My video card is a HIS ATI 4770 which worked fine with the previous Vista32 bits or this Windows 7 64 bits until the memory remap.

 

I tried all sorts of graphic drivers updates, but none of them worked. The only solution for Windows to load normally is to disable the memory remap, and remain with only 3.25 GB of usable memory in Windows.

 

Any thoughts on a solution to this?

 


Message edited by eddyiek on 10-06-2009 at 01:40:35 PM
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Bronze Motherboards badge o1die   10-06-2009 at 04:23:37 PM
- 0 +

If you are using 2 different sets of ddr2, then the board may not mix them well. You can try manually setting the timings. I use 5-5-5-15 at cas 2, which works for some memory. Also try turning up the ram voltage to 1.9 or 1.95 volts.

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eddyiek   10-07-2009 at 08:06:11 AM
- 0 +

I tried that last night, but with no success. I tried 5-5-5-15, even 4-4-4-12 with 1.9 and 1.95 volts. Amazingly, my system didn't crash :sarcastic: , but the main problem still isn't solved..

I think it may have something to do with the mobo's AMD 480X chipset limitation, however i am not sure about this..but i can't find any other explanation so far :pfff:

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baddad   10-07-2009 at 03:28:30 PM
- 0 +

There is nothing you should have to do for Windows 7 64 bit to see 4GB or 24GB, this is a hardware problem, it's not reporting to the OS for some reason.


Message edited by baddad on 10-07-2009 at 03:29:13 PM
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