Can I upgrade memory of Satellite A135-S2276 to 3GB ( 1+2 ) Can i add one more HDD for Satellite A135-S2276

You will need a 2.5" SATA HDD to change with. (the operation must be done with the laptop shut down)
Unscrew the container with the HDD sign and remove it. Being SATA you just have to plug
it in the connectors and it should work. (of course you'll have to format it and reinstall your OS).

Here you go:
http://www.18004memory.com/toshiba-satellite-a135-s4427.asp

Toshiba Satellite A135-S2356 has a maximum of 2GB which can be installed in the maximum 2 memory Slots in the memory compartment: 2 X 1GB PC2-4200 DDR2 SODIMM (200 pins) memory stick.
Note that in general, especially for older laptops, that you should not mix different size/brand of memory stick as the unit may even fail to boot or can behave erractically (reboots or system freezes).
Hope it helps.

free up some memory. be sure you free up at least 50%. how much RAM do you have? if you have 1 gb or less upgrade it. install later version of windows like 7. if you wanna buy RAM memory, buy 2 gb for 60$

There is a way, yes, but it requires a few tools and no fear as you rip into the laptop case. I could explain this in detail but I'll leave you with this tutorial on the 'HOW-TO' side of things to browse at your leasure:

http://www.pcworld.com/article/148909/upgrading_your_laptops_graphics_card.html

However, upgrading the RAM will improve speed (if that's what you're really going for). Otherwise, adding a more powerful card may not increase your screen resolution but can add more kick to your gaming experience.

If you're just looking for a little more speed with higher resolution, I'd upgrade the RAM a bit and purchase an external flat screen 1080P 22" monitor that'll plug right into the back of the laptop. It will save you the frustration of possibly damaging the internals of your pc and the disappointment when you realize that the increase in performance isn't worth the risks/effort involved in switching out the cards.

Follow the link for detailed specs.
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=1596141&rpn=PSAD6U&modelFilter=A135-S2276&selCategory=3&selFamily=1073768663
according to them you are only able to have one hd which is SATA,
Mark

First try to reseat the memory, if it is still showing the same amount, then you may have a bad stick of memory, remove both and insert 1 stick into Dimm 1 slot and see if it still registers 894, then put the other in the same slot and see what it registers. Then try in the Dimm2 slot and see if you get a different reading Depending on the manufacturer, it may only show that amount since Windows shows memory different that the memory manufacturer.

Hope this helps.

You'll find a small panel on the back that you can unscrew to add more memory/ram (or change the current card). Here's an illustrated guide: http://www.fonerbooks.com/laptop_2.htm

The system uses shared video memory, so it will always show less memory than actually installed.
It's a good machine, but needs all memory it can get for Vista.
Good luck

With notebook there are not many upgrades available, but if you are using a lot of multi-media it is savvy to increase you memory.

My suggestion is that you look to go up to 2 Gb; you should see a nice different on performances.

 

See the link here below as a reference from Toshiba