Toshiba Ram Upgrade not working

Aug 10, 2018
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Hi,
I have Toshiba satellite A100 787 laptop which is having 512+512 mb memory. As per manual it can be upgradeable to 2+2gb ram. I bought new Samsung ram M378T2953EZ3 CE6 2Rx8 PC2 5300U 555 12 E3 2nos. When i install the system not booting, black screen only comes. Can anyone advise urgently.

Parthiban