Toshiba Satellite A45-S250 PC - where is the ram located?

It can support up to 2gb 1GB per slot. My quick research showed it as PC2100 not 2700. What may be happening is your laptop is under clocking the ram to work with it. http://www.memory-up.com/memory/ToshibaSatellite9722_128MB266MHz.html
This will give you the specs.

make sure it is unplugged and powered off and battery removed before removing screws.
the screws are small so you will need a small screwdriver Usually Phillips head
There may or may not be a memory module in there already. Make sure to research proper memory size - speed and brand before upgrading.
You will be removing the keyboard and other components make sure to note where they go and dont pull too hard
Here is the manual and go to page 67
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=555703&rpn=PSA40U&modelFilter=A45-S250&selCategory=3&selFamily=1073768663


Hope this helps

Sorry mate...
It seems the the issue is with RAM.
A complete Hardware malfunction/ failure issue.
All you can do it is to replace the RAM that you have in ur laptop.
It will work for sure.
Best of luck.

Removing the keyboard exposes the two memory slots, which are covered by a plastic sheet.

You can download the owners manual here which gives directions to remove and replace your ram. (Starts at page 70) Click here:
http://www.retrevo.com/support/Toshiba-A45-S1202-Laptops-manual/id/614ci359/t/2/

If you found this information helpful, please give me a big thumbs-up when you rate my answer. Thanks!

Most toshibas have a small screw on the bottom of the computer, next to the memory cover. take screw out and the use a paper clip or turn on laptop, to eject dvd drive, then turn off laptop, unplug power, then pull on drive outward, shold slid out of laptop,.
if replacing with new drive remove metal screw clip off the back of old dvd drive and screw onto new dvd drive, slide in and replace screw!

You will find the memory on the Toshiba A45-S250 under the keyboard. Snap of the grill that also has the on/off button on it, just above the keyboard. You will find two screws holding down the keyboard and another screw near the middle holding down a small silver piece that is holding down the center part of the keyboard. Lift the keyboard from the screen end toward you. Memory is located under a clear plastic flap.The power should be off and the battery removed during this operation. Be sure to touch some metal piece to ground yourself also. Good luck.

Here's a link to hinge repair procedures...
http://www.laptopka.com/2007/08/01/replacing-satellite-a45-broken-hinges/

It also has a link to search for the replacement part you may need.

* If it's a BIOS problem, try this :

1. Shutdown ur system, and remove the BIOS battery.
2. Reinstall it and start again.
3. You can also replace the battery. (if above steps don't works!)
4. Try to get a updated version of BIOS driver. (if above steps don't works!)

* If u r also hearing any kind of beep sounds, it may be bad RAM (memory). Try this :

1. Shutdown ur system, and remove the RAM.
2. Reinstall it and start again.

tell me if these steps don't work! :)

The Toshiba Satellite A45-S150 has 2 bank(s) which have 1 socket(s) in each bank for a total of 2 memory socket(s). This means the Satellite A45-S150 can support up to 2 individual RAM modules. Look on bottom of laptop and there will be place to take screw out and you will see the 2 modulars. Below is a visual representation of the memory bank(s) and socket(s) configuration for the Toshiba Satellite A45-S150.
Standard Memory Bank & Socket Configuration

Below is the link to your service manual that goes over the disassembly in detail.

http://tim.id.au/laptops/toshiba/satellite%20a40.pdf