I installed two 512MB memory sticks in my toshiba Portege 4010 now it just beeps when I turn it on it worked fine with 256 installed in one stick what gives?

Hello
Try clearing c mos using jumper on mobo or pulling battery on mobo for a min.
Remove memory sticks.
Put battery back in,then memory sticks.

Then try notebook bootup.Set bios to either auto or optimzed setting.

It sounds like a speed issue, in the difference between the 4200 and 5300.

You may have a bad memory stick or your os may need to be reinstalled.

Try removing battery, press and hold power button for 5 seconds and then put back in and turn on and see if it works then.

are the modules the same specs? you may have some incompatibality between them. the board may be reading the ram right it may be you have four 256 sticks instead of 2 of each. read the motherboard manual it might shed some light here.

thats no problem sir,u can upgrade the memory cards of the computer to the level which it supports may be 1gb,2gb or 4gb.....
u can purchase another memory stick of same specifications because its availiable is different size like 128Mb,256Mb,512Mb or 1Gb.....you can use any one according to your wish...

Make sure you have the memory installed correctly. Those beep codes identify it as bad memory. Try the old RAM.
Good luck with this.

Sorry for the delay in my response.

Your computer will accept a maximum of 1 GB of memory. If both memory modules are the same brand and part number then it is possible that one of the sticks are bad.

Try each 512 MB memory stick in the first memory slot, without installing a second stick. This will troubleshoot to find out if one of the 512 memory sticks are bad. If both check out ok, then the problem is with the video adaptor.

Have you tried adjusting the refresh rate on the monitor as I described in my first response?

My final possible solution would be to upgrade the bios. Below is a link to the webpage for your computer system. You will find links for troubleshooting guides, driver and software downloads, product specifications, etc. If you click on driver downloads, then choose your operating system, you will be directed to a page that should provide the latest ROM (bios) update.

http://h10025.www1.hp.com/ewfrf/wc/product?product=93322&lc=en&cc=us&dlc=en&lang=en&cc=us

Hi

The supported Memory types for Dimension 2400 Series is PC2100 (266-MHz) or PC2700 (333-MHz) DDR SDRAM (non-ECC). Supported Memory capacities are 128, 256, or 512MB and a Max if 1GB (1024MB).

The first obvious question is does the new 512MB Memory module meet the above specification? Some Memory modules are able to steep down speed.

If it does, then first ensure the new memory module is properly installed. Take ESD (ElectroStatic Discharge) precautions or you may damage the new memory module and/or the system board.

To proceed compare the system beeps and diagnostics lights color and sequence to the Advanced Troubleshooting guide.

It is possible that the new memory is DOA (Dead On Arrival). Or there is a new fault on the system. If you have access to another compatible system, you may test the new and old memory modules. You may also swap the new and old memory modules to determine if the memory slot is at fault.

Lastly, if you remove the new memory module, does the system complete POST (Power On Self Test)?. If it does you may indeed have a DOA or incompatible part.


Mike

The T40 has two ram slots, you can put a 1g chip in each totaling 2g. If the chip will remove, then it is changeable. Vista needs a minimum of 256 to run, so, when you change BOTH chips to equal 2g it will probably read 1.744g, or it may read the full 2g. If it only reads 1g, then the second slot under keyboard may have malfunctioned. It could also be that the 256 chip is bad and your really only running 512 now. With all that said, in order to achieve 2g, you will need to put a 1g chip in each slot.

Yes you can get 4 sticks of 256MB of RAM or get 2 sticks of 512MB that will work fine on your computer....