Laptop Memory Install Question Acer 5620-4020

Ok guys so i have a problem with this memory i just got that i can seem to figure out. the acer 5620-4020 says it can handle 4 gig of ram from what i read so i ordered. i had 2 gigs of dual channel installed that came with it. when i install the 4 gigs it will not take it, i get a blue screen saying it is preventing from going any further to prevent damage. if i install a 2 gig stick and one of the orignal 1 gig stick it will start up. i switched both sticks and they both work so its not the memory. now heres the weird part. if i run the 3 gig combo that works (1 new stick of 2 gig and 1 old stick of 1 gig) it works like i said, however it depends on where i put the stick. if i put the original in slot one and the new stick in slot two it will work, but if i put the new stick in slot one and the old stick in slot two i get the same error message that i had in the beginning when installing the 4 gig stick. ? I am not sure what is going wrong since like i said i already rulled out the fact that the memory sticks are not bad. anyone have any suggestions?

 

First what kind of memory did you get for example ddr2 800 and what was the original memory?

 

here is the memory i got,

http://www.newegg.com/Product/Product.aspx?Item=N82E16820220229

here is my notebook specs page,

http://www.acerpanam.com/synapse/fo....com&siteid=7117&words=all&keywords=&areaid=2

thanks for responding

btw i contacted acer and they were worthless, basically they said its not their problem, contact the third party manufacture., i never formatted my os when i got the laptop because it was pretty bare, i am running vista home, but i have a copy of xp pro, do you think i should switch os's.

 

can anyone please help?

 

If you have a 32 bit OS, it isn't going to recognize, or at least use, more that 3GB of RAM. Run it with the 3GB of RAM, if that worked for you.

 

thank you, i was just informed tonight that i needed a 64bit os.

ps i've left (again) -

http://forums.afterdawn.com/thread_jump.cfm/715228/4352407