BIOS settings tbook 11

[Lawrence Wence]

Hi all,

I just bought a used tbook 11 and had to find out that it was running very unstable. After a lot of investigation I found out that the tablet had a problem with the RAM (memtest immediately found errors). I tried to get it more stable by changing the settings in the bios for the memory management, lower frequency and stuff like that.

Finally I found out that it totally works stable if I tell the BIOS to use only 2 GB of RAM. Somehow I have the feeling that the addressing of the full 4 GB is not done properly and the autodetection of the LP DDR3 is not working properly. Or the upper 2 GB RAM are simply defect. 🙂

Long story short: Could please someone with working 4 GB make a photo (or write down) the setting of his tbook 11? Would be nice if I could use the whole RAM, although it also works really nice with 2 GB.

Thanks a lot!

lawrencewence

[kakkaroto]

Hi Lawrence,

I have Teclast x98 PLUS II and I have the same problems than you. I had many troubles with Windows blue Screens and so on. I thought I was a problem of drivers, but I was wrong. The problem is that the RAM is defective.

Yesterday, I run a meatiest and I got more than 1000 errors! So now the only I could do it is send it back to China to be repaired, but I want to avoid that.

Could you explain me how to configure the BIOS to use only 2 GB of RAM?

Thank you very much!

Kakkaroto

 

[Lawrence Wence]

Hi Kakkaroto,

as far as I remember it was some chipset setting – NorthBridge. There is some default setting to autodetect the LP DDR3 RAM, I simply changed it to manual setting and told the BIOS to use only “single channel”.

Well, that’s how I remember it without actually going into the BIOS. If you can wait for it, tomorrow I’ll have a USB keyboard at hand and tell you the exact settings I did, but maybe you want to start playing already with the information I gave to you.

If you want to verify that either Android or Windows is detecting only 2GB of RAM then go to Settings-About tablet-Hardware info, or check “System” under windows.

And one more tip: It’s really worth to reinstall some of the apps that are important to you. Since RAM was holding partly garbage while I was installing them, parts of the installed app in the flash memory are now also partly garbage. If you want stability, take the time and reinstall them.

lawrence

[kakkaroto]

Thank you very much for the fast reply.

It is how you told me. I just configured single channel and Windows did not claim at start up! Up to now, I was not able even to start Windows because of a loop of blue screens.

I will continue investigating this issue.

Again, thanks a lot

[Lawrence Wence]

Hi Kakkaroto,

glad it looks better for you. Just for completeness the BIOS settings I have changed:

Auto Detect LPDDR3 DRAM: Disabled

LPDDR3 Chip Select: 1 Rank

LPDDR3 Device Density: 4GB#

Channel selection: Single

 

lawrence

[kakkaroto]

Hi Lawrence,

Up to now I had any problem with the configuration I used (except only blue screen the first day). I have the same as you posted but LPDDR3 Device Density=2GB. I did a memtest I “only” I had 3 error vs more than 1000 I had with the default configuration

So, I assume the problem is the dual channel. This is really bad. Next week I will do some more test to find a better configuration.

Cheers,

kakkaroto

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