I'm using Asus K43TK notebook, with specification:
- CPU: AMD A6-3420M
- Graphics: Radeon HD 6520M/7670M
- RAM bawaan: Hynix DDR3 2GB PC12800
- OS: Win7 Ultimate SP1 64-bit
Next, I upgrade the RAM with Corsair DDR3 4GB PC12800.
BIOS detects total memory capacity as 6 GB.
But Windows says only 2GB is usable (see picture).
What's the matter with my notebook?
How do I make use of total 6GB memory?
Thanks in advance~