Updating ram & troubleshooting

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Well DDR2 1000 at CL5 is better than DDR2 800 at CL4. That PC-8000 may do DDR2 800 CL3 at 2.2v Vdimm.
 
RAM upgrade

I read your article re RAM and followed the points carefully. I have replaced the 256Mb RAM with 1 Gb from Crucial. It appears to run OK but I get several blue screen crashes. Suspect the RAM may be faulty so I downloaded Memtest ISO and burnt it onto CD. When I reboot, I get a DOS screen saying mouse driver has been installed but Memtest does not run. The screen then sits at A:\
 
Hello all!

I just installed a new mobo, RAM, and PSU in a emachines T2824 (I had the new PUS and if all else fails the RAM could be used in a new system mobo processor combo. The processor is a Celeron D 325, 2.53 GHz, 256K L2 Cache, 533MHz FSB. The new mobo is a Biostar P4M900-M4 Socket 478/FSB 800MHz with PCI-Ex16/SATA and DDR2-667. I bought (2) 1 GB sticks of Corsair DDR2 533 PC2 4200 RAM to go with the new mobo. I have it up and running with XP Pro SP2 and it seems to run fine except that with both stick of ram is it only shows 1.75GB of RAM and with only one stick in it only shows 768MB of memory, in either slot, with either stick of RAM. Any ideas? Thanks in advance!

This is my mobo http://www.biostar.com.tw/app/en-us/mb/content.php?S_ID=283
 
if you are using integrated graphics, your video "borrows" RAM.

This is really not a running thread, it was meant to be a FAQ. Next time start a new thread. take care.
 
Ram Upgradation

Tedster said:
adding ram to a laptop provides a two-fold improvement. 1- it increases speed because there is less page-filing. 2 - you increase battery life because the hard drive is accessed less. Glad to see your problem is resolved. :)
Click to expand...


I added 512 mb 333 Mhz Hynix ram with a 256mb 333mhz but no improvment of speed. For improving speed what should I should do (Compaq presario V20000
kUNJIKALY
 
If I remember what I read, its always best to put the same size RAM together.. (i.e: If you have 512 memory, its best to add another 512 memory, if you are going add anything. At least thats what I have read. I have 512 in my new laptop, and I have another 512 on the way for it. I am eventually gonna pull them both out and upgrade each one to 1 gig, making it a total of 2 gig. I just couldn't beat the price on the 512 memory, so I will stick that in and use it for a while.
Scott
 
512 Mb ram

I put 512 mb and 256mb together(same brand and frequency) this is DDR1 333Mhz in lap getting good results.

Any problem using it.
 
thanks dear for your informative response. i opened and found there are two slots, one is empty and other has one 256MB DDR PC 333 sr. no. ZHY333256RAM. The MOBO is Intel (R) Pentium 4 CPU 2.66GHZ and OS is Windows XP Mediacenter edition. Pls adv how much upgrade is possible on this set up and how much is really needed. I do not run any heavy applications on it just routing MS office work, mails, some very very basic games Does 256 mb Ram really make the system slow or the reason is elsewhere? on booting up i even get an error in MS OFFICE.EXE and low disk space warning on C drive. Does it call for re formatting also?
 
Now See What You've Done.....

Tedster said:
In the past few days I have noticed many questions from people with memory (RAM) issues. Being that I have ran into similar problems in the past, I am posting this sticky so that FAQs can be answered quickly...........................10.When all else fails, RTFM.
Click to expand...

Great, profound, and timeless post! Kudos!

Sparky Joe said:
Thanks for the lengthy post Ted, but I have a diff problem I was hoping to find answers to.......Thanks -Joe
Click to expand...

It can never go far enough. When I was in electronics sales I constantly muttered to myself, "just when I think I know all the answers, the customers change all the questions". Like a Mantra. Perhaps for brevities (and clarities sake) you could edit it down to "RFTB".

Anyway, Happy New Year......!

Please be aware I'm joking, I hope I'm laughing WITH you!
 
actually my manual provided by Zenith does not give any useful specification etc. anyway,basis your helpful replies i have added today one 256mb DDR1 RAM on the 2nd slot of my comp which was having one similar RAM on it but instead of getting 512mb that i was expecting, i got 484 mb! is this OK. how do i see the difference in may have made to my system. normally i am running just basic ms office, net surfing and outlook.
 
I have not read the tread, do u have onboard video? running those program and nothing more u should be fine with the mem. u have installed. a gig would be better but that would work.
 
Tedster said:
In the past few days I have noticed many questions from people with memory (RAM) issues. Being that I have ran into similar problems in the past, I am posting this sticky so that FAQs can be answered quickly.

STEP 1: INDENTIFY WHAT TYPES OF MEMORY YOUR MOTHERBOARD ACCEPTS
First: Know the types of RAM that your motherboard can take. If not sure Read The F***ing Manual (RTFM), or contact the manufacturer (go to the website or call.). 80% of installation RAM problems are caused by incompatibility. Some motherboards are very picky about what types or brands of RAM they'll take. Asus is one of the motherboards, Dell is another – in addition, Dell uses proprietary architecture in many of their systems so generic RAM or third party RAM will not work in many cases. It PAYS to build your own computer.

Be aware that identifying programs and/or websites are NOT 100% reliable indicators of what type of RAM you can use. When all else fails RTFM.

NEVER MIX SPEED, TYPES, SIZE, OR BRANDS OF RAM. At best it might work, at worst it won't and you might permanently do some damage. Faster memory mixed with slower will always result in the slowest speed available if it does work (and you're wasting the faster memory speed for nothing.)

DO NOT OVERCLOCK memory. This means do not adjust voltage settings, latencies, or other settings in your BIOS before installation. Increasing voltage is a sure way to burn out your memory early. Leave this stuff for experimenters and those that can afford toasted and burned out components. If you're a newbie or an average joe/jane – LEAVE IT ALONE.


Step 2:
GROUND YOURSELF and the COMPUTER.

When installing, GROUND YOURSELF and the Computer. Use an anti-static mat and/or wrist strap – available at Radio shack and most electronics stores. Some recommend keeping your computer plugged in the wall for grounding reasons, I do not. Accidentally turning on your computer is a sure way to damage something as well as to shock yourself- so leave it unplugged. You may want to run a thin wire from the case of the computer to a common ground like a cold water pipe. Do not work on a computer in a carpeted room if possible. Turn OFF the computer. I have seen stupid people plug components in when the system was still on. If you're that dumb, don't bother upgrading the system yourself. Read a book about basic computing before attempting operation.

Touch the computer frame and if you can, keep a part of your body in contact with the frame at all times to ensure no static buildup.

Step 3:
LOCATE SLOTS & # of STICKS REQUIRED FOR UPGRADE (RTFM)

Locate your memory slots. Motherboards vary in the number of slots available. Some motherboards, particularly Pentium, require memory upgrades in pairs. Always try to match memory sticks when upgrading for enhanced performance, particularly with DDR RAM.

Step 4:
INSTALLATION:
There are 3 basic types of installation depending on your type of RAM:

SIMM:
When installing SIMMs, most manufacturers require the module to be inserted at a 45 degree angle, then snapped forward to the correct position. Most Pentium systems require matched pairs.

DIMM:
Unlike SIMM, DIMMs may be snapped directly into the socket. Note: Some DIMM sockets have different physical characteristics. If your module doesn't seem to fit, do not force it. You probably have an incompatible type.

SODIMM: (Commonly found in laptops)
Insert the module and snap down into position. Some laptops require a single SODIMM module while others require matched pairs.

Step 5: REBOOT & TROUBLESHOOTING
Put your case back together, and replug everything. Turn on your computer and boot up as normal. Your BIOS should automatically recognize the added memory. If you did it right, you shouldn't have any issues, however.......

if you did it wrong:

1.If you receive an error message or hear a series of beeps when booting, your system may not be recognizing the new memory. Remove and reinstall the modules to make sure they are seated securely in their sockets.

2.Make sure that your new memory is the same type as your old memory. (i.e. FPM,EDO,SDRAM,parity/non-parity/ECC). Using EDO or SDRAM in a system that does not support it will not work, often resulting in a blank screen or no POST (Power On Self Test), or a BIOS/CMOS setup error.

3.Fill your slots with the largest density (put the largest module in blank 0), the second largest in bank 1, and so on. Remember, it is always advisable to have all modules the same size.

4.If your module will not fit, it may be incompatible. There are different notches for for 3.3V, 5V, buffered, and unbuffered memory modules. Make sure your module is oriented in the right direction also.

5.If your system still won't boot up, check your other computer connections internally with the power off. You may have bumped or jostled another component accidentally.

6.If you can boot up and get other errors, run MEMTEST86+ from a DOS bootable floppy disk. It is not advisable to run a computer without a floppy drive. Floppy drives are still required for hardware diagnosis and BIOS updates, this is a leftover architecture requirement from the early days of computing. All Intel based computers (to include AMD) have 8088 architecture at their core for basic operation. IF you are using DOS 6.22 and earlier and are getting memory errors, consider running memmaker to re-configure your memory settings.

7.If you get a memory mixmatch error, follow the prompts to enter setup, then select save and exit. (This is not an error – some systems must do this to update their CMOS settings.)

8.If your system is only recognizing half of a new module's memory, contact the module manufacturer tech support.

9.Recognize that adding TOO much memory (rare) may not be recognized by your operating system. Every operating system has an upper limit. Windows XP has an upper limit of 4 [size="4"]Mega[/size]bytes. Older versions of Windows are less.

10.When all else fails, RTFM.
Click to expand...

Windows XP has upper limit of 4GB not 4MB
 
Hi
I have DDR1 RAM with 4 slots of DIMM memory.
My PC came with 512mb of memory and a year or so later i added a single sided chip of DDR ram. Those 2 worked perfectly and i hav had it since.

A few days ago I baught anothe 1gb of ram. It is DDR 400 like the others and is double sided. I tried installing it but my pc didnt boot up. I later discovered that my motherboard cannot have 3 memory modules.

I tried the new 1gb ram on its own and it doesnt work and with 1 of the old ones. I have tried many combinations using the four slots.

Can you help me
Thank you
 
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