windows not opening with new ram

[JOLLYLASS]

hi i posted a question last week and i was advised to buy more ram. i have got 1gb of ram but when its installed in the pc windows wont open . its the same as the one i have replaced it with- only more memory. i previously had 256 mb. when i put the original back in again windows is fine. ps it works in another pc as we have tried it. any ideas as to what can be wrong before i send it back?? thanks.

[alfgbt]

Hi,as this memory works fine in another pc the problem would seem to be with the pc which you purchased it for.
How old is this pc & have you checked that the motherboard can support 1 GB of memory & if so can it support just a single 1GB stick .

[faxman837]

hi... go to www.powerleap.com and download theeir small program and it will tell you exactly what memory and the available sizes that your computer will take...