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Question

Position dependent (vertical or horisontal) motherboard issu

Hi,
Here's the configuration of the computer.
Acer Aspire M5100
Model: AM5100-U5301A
Motherboard: F690GVM (that's what Open Hardware Monitor shows)
CPU: AMD Athlon 64 X2 Dual Core 6000+
RAM: 4 sticks of 1GB DDR2 NANYA NT1GT64U8HBOBY-25D (looks like these are replaced as there's HP stickers on all of them, besides, I can read 3GB of RAM on the box)
HDD: 500GB SATA II Seagate Barracuda ST3500830AS
Video: Onboard ATI Radeon X1200
Windoes 7 (all updates installed)
Computer fully scanned with Security Essentials and Malware Bytes

Problem 1
With 4 sticks of RAM installed, LAN won't work. With automatic IP, it shows the received IP as 169... , although my network gateway is 192.168.1.1. When I set IP manually (something like 192.168.1.150), it still doesn't work. No ping, browsers or anything.
Also instead of any sound you'd get a static noise. By the way, all of these is not mother board position dependent yet.
It all goes away when I remove the RAM stick in the 4th socket. A particular stick does not matter, It just has to be 3GB to get working. I have shuffled them. Moreover, the issue persists when I installed another 2 sticks of 2GB (total 4GB) from a different computer.

Problem 2
Now I'm telling you about the issue with 3 sticks (3GB in total) of RAM installed. OK, now check this out. Whenever I lay the box on it's side (horizontal position) everything is cool. When I put it vertical, it's normal position, I start getting a lot of ping time outs, widows update ends up throwing error 80072EE2, Skype, Team Viewer are offline, although the network sign in notification are show no problems. By the way, I'm sure it's MoBo since I have removed every single component, including MoBO, from the box and have twisted all possible ways. Only the motherboard twist from horizontal to vertical affects it.

Help please

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All Answers

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Answer
Re: motherboard

In reply to: Position dependent (vertical or horisontal) motherboard issu

Clearly something wrong with the motherboard.
I'd try to replace the 4 sticks of 1GB by 2 sticks of 2 GB.

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Thanks Kees_B

In reply to: Re: motherboard

Thanks Kees_B,
You apparently missed it, but I told in my post that I've already tried that.

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Re: already done

In reply to: Thanks Kees_B

Then replace the motherboard.

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Position dependent (vertical or horisontal) motherboard issu

In reply to: Re: already done

Thanks Kees_B,
That's a great idea!

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Answer
Just a thing.

In reply to: Position dependent (vertical or horisontal) motherboard issu

Is the BIOS current?

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Position dependent (vertical or horisontal) motherboard issu

In reply to: Just a thing.

Thanks R. Proffitt,
Guess no. That's actually what came to my mind too, but I couldn't find any BIOS versions at Acer. Looks like they don't publish any.

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Position dependent (vertical or horisontal) motherboard issu

In reply to: Position dependent (vertical or horisontal) motherboard issu

In fact, even if BIOS, that would address the 1st issue, but when it comes to MoBo position, I doubt.

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Position dependent (vertical or horisontal) motherboard issu

In reply to: Position dependent (vertical or horisontal) motherboard issu

My bad the reason was the LAN port, so the 2nd issue is gone now, the computer works OK upright. Now for 1st issue I'm inclined towards BIOS indeed. Can someone help updating BIOS for this thing please?

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Why I thought BIOS.

In reply to: Position dependent (vertical or horisontal) motherboard issu

As to position dependent we are talking configuration dependent not board position.

So more RAM can interfere with I/O mapping which is part of the BIOS's job on start.


SO.... Many old Athlon 64 X2's could only be fitted with 3GB RAM or odd things would happen. These also were a mixed bag of nutty other issues with later Windows.
http://acersupport.com/acerpanam/desktop/0000/Acer/AspireM5100/AspireM5100sp2.shtml didn't note Windows 7 and later so this is sounding more and more like the old issues I ran into on old Vista 32 bit machines.

Fix? Unlikely. Be sure you have a 64 bit OS?

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BIOS

In reply to: Why I thought BIOS.

Yea, it is an old system and it must have originally had Vista on it. The current system is 7 X64. So no way resolving this issue?

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Usually by limiting RAM

In reply to: BIOS

So the old I/O map is inside the 4GB memory mapping.

Just in case, see if the BIOS lets you disable any CPU VM features. It was a longshot on an old Vista AMD laptop but helped. Sorry no magic here. But it's been seen and we know why.

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