Satellite Pro C50-A-1E4 runs unstable using new RAM modules

I have the above machine and have upgraded the RAM (to 8GB) a long while ago. I normally upgrade BIOS if there is a new release.
However, for some while my machine has been unstable and this is due to machine running RAM at XMP1866 (933MHz) instead of CPU rated 1600 (800MHz). I have attached screengrab from Piriform Speccy to report this.
There is no setting within UEFI BIOS 1.40 to adjust RAM timing and therefore BIOS takes SPD data incorrectly for CPU ID.
I am unable to locate earlier BIOS to check if this pattern was repeated but it took over a year to display fault hence the machine is out of warranty. If I put smaller sticks of 1600 RAM the system seems stable.
However, I purchased the RAM to make use of it. I am now unable to test if the RAM is faulty as it will not pass Memtest (either lockup or crash out) but I am unsure as to whether system instability is cause of system being OC due to BIOS or faulty RAM.
The question being it ran perfectly for about a year before displaying errors. BIOS should correctly detect speed setting from JEDEC standard data in EEPROM. It does not do this. I have often ran 'overspec' memory in other PCs without encountering this behaviour. It is only troubleshooting that has made me aware of this discrepancy.
RAM is Crucial Ballistix 8GB-1866 BLS8G3N18AES4CEU.16FE

Originally Posted by TomDexter
I doubt its a BIOS issue
First of all you can not use any RAM module you have to use an fully compatible modules and as you probably know, not all RAM modules available on the market are fully compatible.
As far as I know in case of RAM upgrade Toshiba recommends the usage of these modules.
4GB DDR3-1600 PA5037U-1M4G
8GB DDR3-1600 PA5037U-1M8G
The specifications are:
Memory Speed: 1600Mhz PC3-12800
Capacity: 8GB
Pins: 204 SODIMM
RAM Type: DDR3 SODIMM
Rank: Dual Rank
CAS Latency (CL): CL11
Voltage: 1.5v
I would recommend you to use modules which meet exactly the same specifications.
That's sidestepping the point nicely. I still believe the BIOS to not be reading the EEPROMs correctly, but hey if you can swerve that one then I'll swerve Toshiba in future.
Thanks for editing the post title.

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> and i'm totally sure that my problems started when I updated the laptop....
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Message was edited by: widgy

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[size=15]IF YOU GOT AN MSI 655 MAX OR 648 MAX AND YOU WANNA USE TWO OR MORE MEMORY MODULES GET VERITECH DDR333/512MB (OR WHATEVER) BUT DEFINITELY NOT CRAPPY KINGMAX DDR333/512MB!!! [/SIZE]
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Satellite Pro C50-A-1E4 runs unstable using new RAM modules

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