Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 60
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
All today's birthdays', congrats!
Sonic (58)
kamelryttarn (46)


Next birthdays
11/30 arnsfelt (45)
11/30 jaysun92 (32)
12/02 Hax (39)
Contact
If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.


Special Thanks To:
  • Aaron Holmes
  • Aaron Wheeler
  • Adam Horden
  • Alan Scrimgeour
  • Andre
  • Andrew Haynes
  • Anonymous000
  • asabase
  • Austin Weil
  • barney
  • Barry
  • Bert Hickman
  • Bill Kukowski
  • Blitzorn
  • Brandon Paradelas
  • Bruce Bowling
  • BubeeMike
  • Byong Park
  • Cesiumsponge
  • Chris F.
  • Chris Hooper
  • Corey Worthington
  • Derek Woodroffe
  • Dalus
  • Dan Strother
  • Daniel Davis
  • Daniel Uhrenholt
  • datasheetarchive
  • Dave Billington
  • Dave Marshall
  • David F.
  • Dennis Rogers
  • drelectrix
  • Dr. John Gudenas
  • Dr. Spark
  • E.TexasTesla
  • eastvoltresearch
  • Eirik Taylor
  • Erik Dyakov
  • Erlend^SE
  • Finn Hammer
  • Firebug24k
  • GalliumMan
  • Gary Peterson
  • George Slade
  • GhostNull
  • Gordon Mcknight
  • Graham Armitage
  • Grant
  • GreySoul
  • Henry H
  • IamSmooth
  • In memory of Leo Powning
  • Jacob Cash
  • James Howells
  • James Pawson
  • Jeff Greenfield
  • Jeff Thomas
  • Jesse Frost
  • Jim Mitchell
  • jlr134
  • Joe Mastroianni
  • John Forcina
  • John Oberg
  • John Willcutt
  • Jon Newcomb
  • klugesmith
  • Leslie Wright
  • Lutz Hoffman
  • Mads Barnkob
  • Martin King
  • Mats Karlsson
  • Matt Gibson
  • Matthew Guidry
  • mbd
  • Michael D'Angelo
  • Mikkel
  • mileswaldron
  • mister_rf
  • Neil Foster
  • Nick de Smith
  • Nick Soroka
  • nicklenorp
  • Nik
  • Norman Stanley
  • Patrick Coleman
  • Paul Brodie
  • Paul Jordan
  • Paul Montgomery
  • Ped
  • Peter Krogen
  • Peter Terren
  • PhilGood
  • Richard Feldman
  • Robert Bush
  • Royce Bailey
  • Scott Fusare
  • Scott Newman
  • smiffy
  • Stella
  • Steven Busic
  • Steve Conner
  • Steve Jones
  • Steve Ward
  • Sulaiman
  • Thomas Coyle
  • Thomas A. Wallace
  • Thomas W
  • Timo
  • Torch
  • Ulf Jonsson
  • vasil
  • Vaxian
  • vladi mazzilli
  • wastehl
  • Weston
  • William Kim
  • William N.
  • William Stehl
  • Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Forums
4hv.org :: Forums :: Computer Science
« Previous topic | Next topic »   

RAM Upgrade Not Adding up

1 2 
Move Thread LAN_403
Simon
Wed Jun 14 2006, 05:33AM Print
Simon Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
Right, this computer's motherboard has two SDRAM banks, which used to have a 64MB module and a 128MB module, giving 196MB.

Now I just got a good deal on a 256MB SDRAM module, so I replaced the 64MB, expecting to double the RAM.

For some reason the BIOS and Win2000 both only think there's just over 256MB now.

What's going on?
Back to top
Desmogod
Wed Jun 14 2006, 05:49AM
Desmogod Registered Member #139 Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358
What motherboard/BIOS are you running. Is it quite old? (Relatively)
Could be a limitation in the boards design or the BIOS.
Back to top
Avalanche
Wed Jun 14 2006, 12:27PM
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
Some chipsets are fussy with mixing single and double sided memory. Do you have a mixture of single/double sided now?

A particular Intel chipset (forgot which one) used to be very bad for this.
Back to top
Bjørn
Wed Jun 14 2006, 02:14PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
There is usually a table in the manual that tells what kind of module works in what slot when combined with different modules. If I don't have the manual I just try all possible combinations. It is not uncommon to find out that the two largest modules you got does not work together in a motherboard.
Back to top
Carbon_Rod
Wed Jun 14 2006, 05:13PM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
In general,
1.) Try inserting one piece of ram at a time.
2.) Boot until system probe and POST is done
3.) Shut down
4.) Insert next piece of memory

Tips:
* Insert modules starting with the largest sized one in ram slot 1. (Then try the same thing starting with the smallest in slot one if it does not work.)
* Mixed speed memory can cause headaches.
* Not all ram works with every system or at the ideal speed.

Cheers,
smile
Back to top
Electroholic
Wed Jun 14 2006, 08:33PM
Electroholic Registered Member #191 Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
hey, if it's dusty, why dont' you try and clean the slot and the gold contacts on the ram.
then go into bios, and make it do the memory test.(disable quick POST)
Back to top
Simon
Fri Jun 16 2006, 05:36AM
Simon Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
Thanks everyone!

I can get another module from the same source and see if they work together.
Back to top
...
Fri Jun 16 2006, 05:52AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
I am almost sure that it is that you are mixing sizes. I just had that problem yesterday... I was hoping to try an ubuntu lave disk on an old junker box to see if it would handle being a backup something (which it did after downgrading the graphics card from a 10 year old on to an 11 year old one, even the sound card was supported amazed ). I had a 128 stick and a 256 stick, so the bios read up the to top of the 128 stick and ignored the rest of it... That also caused major problems with the ubuntu disk, causing to to hang on the initial startup. But dropping it back to 128+128 caused it to run fine. I also tried with just the 256 one and all I got was beeping on startup angry
Back to top
Dr. Who
Fri Jun 16 2006, 05:02PM
Dr. Who Registered Member #326 Joined: Sat Mar 18 2006, 01:12PM
Location: Glasgow, Scotland
Posts: 66
Some brand-name PCs (Dell, IBM, etc.) will only work with RAM designed specifically fior that make/model.
Back to top
Simon
Sat Jun 17 2006, 12:53AM
Simon Registered Member #32 Joined: Sat Feb 04 2006, 08:58AM
Location: Australia
Posts: 549
... wrote ...

I am almost sure that it is that you are mixing sizes.

I had 64MB + 128MB before which proves it can work but with this sort of thing you have to put aside crisp ideas of silicon and accept that there really are little demons inside making it all work. mistrust

It'll be a few days before I get hold of another RAM module.
Back to top
1 2 

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob

Go to:

Powered by e107 Forum System
 
Legal Information
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.