Windows 7 - Explorer not showing drives

Can someone help me how to solve this problem?

F drive (label: Multimedia) and G drive (label: Download) doesn't show in Windows 7 explorer



And here's the Disk Management window



Anyone can help me with this?
I'm running on Windows7 Build 6801 32bit

I'm sorry for my English, I'm Indonesian.

Don't remember if there was a solution for that, but why are you on build 6801?

My connection are too slow to download newer build, and I think it's better just to wait for the final release

Ok here is the thread i seen before on this perhaps it will help. Partition not showing up in "Computer" on left side

Thank's but still doesn't solve my problem.

Windows 7 hides empty drives by default.

To view them go to windows explorer, tools, folder options. Select view tab. Part way down the list untick the box for "hide empty drives in the computer folder".

No, these 2 volumes are not empty. It was 4 volumes on the drive before I modified the partition with EASUS Partition Master (C, F, G ,H). Then I remove G and move F and H to make C bigger, since 7 needs a lot of space than XP ( I used XP before ). It's goes well without any problem. Then when I rename the H to G, this problem occurs. I don't know why. Now I can't even rename the label for F and G ... Is it only because I'm using 6801 or what? I've tried all the solution from this forum, but it's still there...