Lenovo g50-80 upgraded 4gb ram but it's not detected?

[xostom]

After upgraded my Lenovo g50-80 with 4gb ram (RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3170ME68F9F1600 SERIAL NUMBER 438E5899) in the second slot I noticed it's not detected the ram even after trying to change the mconfig settings And also have checked in the bios only 4gb is detected for one slot.
And the original ram in the laptop is( RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3160ED58E9W1600 SERIAL NUMBER 435A5C4C)
What could be the problem please help ??

 

[krzyimprt]

After upgraded my Lenovo g50-80 with 4gb ram (RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3170ME68F9F1600 SERIAL NUMBER 438E5899) in the second slot I noticed it's not detected the ram even after trying to change the mconfig settings And also have checked in the bios only 4gb is detected for one slot.
And the original ram in the laptop is( RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3160ED58E9W1600 SERIAL NUMBER 435A5C4C)
What could be the problem please help ??

Did you try both slots to make sure they're working correctly with the working stick? Either you have a bad memory bank, the pins are corroded and not making contact, or the stick is completely dead. I'm assuming both sticks are identical.

Try cleaning the contacts with Isopropyl alcohol?

 

[xostom]

After upgraded my Lenovo g50-80 with 4gb ram (RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3170ME68F9F1600 SERIAL NUMBER 438E5899) in the second slot I noticed it's not detected the ram even after trying to change the mconfig settings And also have checked in the bios only 4gb is detected for one slot.
And the original ram in the laptop is( RAMAXEL TECHNOLOGY PC3-12800{800MHZ} PART NUMBER-RMT3160ED58E9W1600 SERIAL NUMBER 435A5C4C)
What could be the problem please help ??

Did you try both slots to make sure they're working correctly with the working stick? Either you have a bad memory bank, the pins are corroded and not making contact, or the stick is completely dead. I'm assuming both sticks are identical.

Try cleaning the contacts with Isopropyl alcohol?

 

[xostom]

Thanks ..now it's working properly