Solve : Ram slots not working?

1.	Solve : Ram slots not working?
Answer» I have a gig ram chip in a pc2700 slot. I can inter change the two slots but when i put another ram chip in it only reads the 256 chip. Anything i can do to fix this. May be something in the BIOS? my spec are marked under my profile. Let me know if you need more info.What motherboard is this? Did you read the manual? how can i tell what mother board it is? its an acer travelmate 4000 alc. I searched on the internet to no avail.I put 2 of the same 1 gig ram chips by the same manufacturer in both slots but it only reads 1 chip at a time. I took one chip out and swapped it between the two so i know both slots work, they just don't work both ram chips at the same time.Are you sure that SUPPORTS 1G RAM chips ? ? A few i looked up only support 512 chips...yeah it reads a 1 gb ram chip if its in by itself. just not two. i even tried a combo of 1 gb ram chip and a 256. didn't work. only read 256. then I put a 512 plus the 1 gb ram chip. it only read the 512, not the 1 gb. you think it might max out at 1 gb?Go to crucial.com and click on [check my system] Quote from: patio on August 14, 2009, 11:10:18 AM Are you sure that supports 1G RAM chips ? ? A few i looked up only support 512 chips... According to this it supports 2gb.Quote from: lectrocrew on August 14, 2009, 12:56:07 PM According to this it supports 2gb. Not all models...read further.Ok, so i took out the both chips and put the 1 gig chip in the furthest slot BACK and the computer won't boot. Does that mean the MB is fried or is there something I can do to fix this? I had it working in either slot before but now only the top slot works. Hmmmm Quote from: JHenderson on August 14, 2009, 12:04:58 PM i even tried a combo of 1 gb ram chip and a 256. didn't work. only read 256. then I put a 512 plus the 1 gb ram chip. it only read the 512, not the 1 gb. You can safely add faster memory to a computer that was designed to run slower memory. However, your system will operate at the SPEED of the slowest memory module. Also, are all these modules DDR333 (PC2700)? Quote Ok, so i took out the both chips and put the 1 gig chip in the furthest slot back and the computer won't boot. What happens if you load the 256 by itself, or the 512 bQuote from: JHenderson on August 14, 2009, 05:19:43 PM and the computer won't boot. At what point does it stop the boot process? Any error message? Any BIOS BEEP codes? Will it boot in safe mode?Sorry, I dont WANT to go google hunting too much for this, as i am on dial-up but by any chance is the 1GB stick double sided? eg RAM chips on both sides? It could be your board is limited to single sided sticks if you are using both slots of the same bank. if both the 512MB and 256MB stick are double sided, try both of them and see if it totals 768MBAlso Lectro just so you know not all RAM will properly "step down" as you suggested...there are limits.Quote from: patio on August 15, 2009, 06:00:56 AM Also Lectro just so you know not all RAM will properly "step down" as you suggested...there are limits. Thanks for the correction Patio. I'll do some research to see if I can find info on which type do and which don't. Although with so many different types of memory out there it may take some time. I hope JHenderson post back. I'm curious as to what the culprit is here.

Answer»

I have a gig ram chip in a pc2700 slot. I can inter change the two slots but when i put another ram chip in it only reads the 256 chip. Anything i can do to fix this. May be something in the BIOS? my spec are marked under my profile. Let me know if you need more info.What motherboard is this? Did you read the manual?

how can i tell what mother board it is? its an acer travelmate 4000 alc. I searched on the internet to no avail.I put 2 of the same 1 gig ram chips by the same manufacturer in both slots but it only reads 1 chip at a time. I took one chip out and swapped it between the two so i know both slots work, they just don't work both ram chips at the same time.Are you sure that SUPPORTS 1G RAM chips ? ?
A few i looked up only support 512 chips...yeah it reads a 1 gb ram chip if its in by itself. just not two. i even tried a combo of 1 gb ram chip and a 256. didn't work. only read 256. then I put a 512 plus the 1 gb ram chip. it only read the 512, not the 1 gb. you think it might max out at 1 gb?Go to crucial.com and click on [check my system] Quote from: patio on August 14, 2009, 11:10:18 AM

Are you sure that supports 1G RAM chips ? ?
A few i looked up only support 512 chips...

According to this it supports 2gb.Quote from: lectrocrew on August 14, 2009, 12:56:07 PM

According to this it supports 2gb.

Not all models...read further.Ok, so i took out the both chips and put the 1 gig chip in the furthest slot BACK and the computer won't boot. Does that mean the MB is fried or is there something I can do to fix this? I had it working in either slot before but now only the top slot works. Hmmmm Quote from: JHenderson on August 14, 2009, 12:04:58 PM

i even tried a combo of 1 gb ram chip and a 256. didn't work. only read 256. then I put a 512 plus the 1 gb ram chip. it only read the 512, not the 1 gb.

You can safely add faster memory to a computer that was designed to run slower memory. However, your system will operate at the SPEED of the slowest memory module.

Also, are all these modules DDR333 (PC2700)?

Quote

Ok, so i took out the both chips and put the 1 gig chip in the furthest slot back and the computer won't boot.

What happens if you load the 256 by itself, or the 512 bQuote from: JHenderson on August 14, 2009, 05:19:43 PM

and the computer won't boot.

At what point does it stop the boot process?
Any error message?
Any BIOS BEEP codes?
Will it boot in safe mode?Sorry, I dont WANT to go google hunting too much for this, as i am on dial-up but by any chance is the 1GB stick double sided? eg RAM chips on both sides? It could be your board is limited to single sided sticks if you are using both slots of the same bank. if both the 512MB and 256MB stick are double sided, try both of them and see if it totals 768MBAlso Lectro just so you know not all RAM will properly "step down" as you suggested...there are limits.Quote from: patio on August 15, 2009, 06:00:56 AM

Also Lectro just so you know not all RAM will properly "step down" as you suggested...there are limits.

Thanks for the correction Patio. I'll do some research to see if I can find info on which type do and which don't. Although with so many different types of memory out there it may take some time.

I hope JHenderson post back. I'm curious as to what the culprit is here.

Solve : Ram slots not working?

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