I put a 1gb expansion ram in my toshiba satellite M35X-S149.  Did it with the battery out.  Put the new ram in the empth slot - - 256 mb in the other slot from the factory.  When I turned on the power, the green power light came on and the computer made a series of beeps in a specific pattern.  1 beep, pause, 3 beeps, pause, 3 beeps, pause, 1 beep.  Then nothing else happened.  I pulled the new ram and this still happened. What does this mean / how do I fix it. Help very much appreciated. Thank you. Dennis Hoover

(1) flip the Notebook/Laptop PC over - see Fig.1 below
(2) find the memory cover - it really easy to find in this photo.



Fig.1 Toshiba M35X bottom view - the memory cover is seen at center left and secured by a single screw.

(3) remove the (1) screw securing the memory cover.



Fig. 2 Toshiba M35X laptop shown with memory cover removed and HDD (Hard Disk Drive) removed, and with the HDD cover flipped up.
The RAM (SO-DIMM boards) are visible at center left.
The HDD cover is seen at the bottom of the photo.

(4) Using proper anti-static/static control techniques, clip alligator clip or your anti-static wrist strap to a frame ground of the laptop at an I/O connector or frame ground under the HDD cover.
(5) carefully remove (2) old 256 MB SO-DIMM DDR333 memory modules.
Store old memory boards in the anti-static plastic baggie in which the new memory boards were shipped.
(6) install (2) new 1GB SO-DIMM DDR333 boards, for total of 2GB of system RAM.
(7) reassemble system, and boot OS (operating system).
The laptop's ROM BIOS will auto-detect the new RAM and begin a standard POST (Power-On Self Test).
(8) If OS is MSWindows, it will also auto-detect the new memory, and allocate it to application software.

The technology of the Toshiba Satellite M35X-S349 memory module is called
DDR333, meaning DDR (Double Data Rate) SDRAM (Synchronous Dynamic RAM), at a memory bus speed of 333 MHz.
The Form Factor of the DDR memory card is SO-DIMM, which stands for Small Outline DIMM (Dual In-line Memory Module) (see photo).
Reference: http://en.wikipedia.org/wiki/DDR_SDRAM
Reference: http://en.wikipedia.org/wiki/SO-DIMM



Fig.3 Each 1GB SO-DIMM DDR333 memory module will look like this one.
The Toshiba Satellite M35X-S349 supports a maximum of two SO-DIMM memory modules.

Each memory module can hold (a) 256MB, (b) 512MB, or (c) 1GB,
in the SO-DIMM Form Factor compatible with the Toshiba M35X-S349 Notebook PC.

Some model laptops have memory slots in different locations.
One would be on the bottom of the laptop and one would be on top of the motherboard under the keyboard.
The memory slot on top of the motherboard would already be fitted with a memory module and only needs to be replaced with a larger RAM module if required.

According to the Toshiba Site, the video card is part of the motherboard and there are no expansion options except for RAM internally.

just remove the 256mb ram it is the main problem only insert equal memmory of rams in 2 slots, if u insert 1gb ram in one slot try to insert also 1gb ram in other slot, donot inser 2 unequal rams in one time

http://www.shopping.com/xPF-Toshiba-Toshiba-Satellite-Notebook-PC-M35X-S114

Looking at the specs, the max is 2gb for your Toshiba. According to this website, its only a 256mb ddr sdram. So my guess is you only have 1 slot for the ram. I'd go with a 2gb ram if you can afford it, 1gb just don't cut it in todays technology.

I believe its the PC2700 model, so find a 1gb or 2gb PC2700 @ 333mhz and you should be set.

Before going for the upgrade make sure you read the specifications as to how much size your system supports,
Then take your laptop to the authorized vendor and ask them to upgrade it accordingly so that you do not have any compatibility issues later.

How much memory did it have before you removed the 256Mb RAM?
If it had 756Mb RAM then the memory in the laptop has 512 Mb plus 256 Mb RAM modules, the 256Mb in the slot you can see and possibly 512Mb in a slot under the keyboard or soldered on the motherboard.
Therefore by removing the 256Mb and replacing with 1Gb memory module will give you a total of 1.5Gb

• your Toshiba Satellite M35X-S311 has the following memory configuration
  
• Configured with 512MB
  
• The maximum memory you can have is 2048MB (Max),
  
• 2 memory slots using 1024MB PC2700 DDR333 SDRAM 2.5V SODIMM Memory modules (Both slots may be occupied). Go to a store and request for this memory specification and you will have 2GB of memory for all the programs you have listed here. Good Luck!
  

nope.works just fine in more than one machine. The 2nd computer WILL tell you on start up that memory configuration has changed, but you'll already know that.

go ahead and enjoy the memories(he..he)

got backup?

Sounds like a bad battery. Try replacing it.