Samsung NP300 with HM70

[cookertron]

Hi All,

I had a Samsung NP300E5C-A05uk laptop but the motherboard died (Model:SCALA3-15/17CRV, rev: 1.0) and bought a same model replacement but with rev: 1.2

I transferred the CPU into the new board and it boots fine. The problem is the laptop randomly turns off which I'm guessing down to incompatibilites between the CPU and the instruction set in the motherboard (missing microcode?). What's more I can't find anywhere on Samsung's support website a way to update the bios.

This is the new board's bios information:

SerialNumber: 123490EN400015
BiosCharacteristics: {7, 11, 12, 15, 16, 19, 26, 27, 28, 29, 30, 31, 32, 33, 40, 41, 42, 43}
BIOSVersion: {"SECCSD - 2", "Phoenix BIOS SC-T v2.2 P05RAJ"}
BuildNumber:
Caption: Phoenix BIOS SC-T v2.2 P05RAJ
CodeSet:
CurrentLanguage: en-US
Description: Phoenix BIOS SC-T v2.2 P05RAJ
EmbeddedControllerMajorVersion: 255
EmbeddedControllerMinorVersion: 255
IdentificationCode:
InstallableLanguages: 7
InstallDate:
LanguageEdition:
ListOfLanguages: {"en-US", "fr-FR", "ja-JP", "ko-KR", "zh-CHT", "zh-CHS", "ru-RU"}
Manufacturer: Phoenix Technologies Ltd.
Name: Phoenix Technologies Ltd.  Phoenix BIOS SC-T v2.2 P05RAJ
OtherTargetOS:
PrimaryBIOS: TRUE
ReleaseDate: 20130220000000.000000+000
SerialNumber: 123490EN400015
SMBIOSBIOSVersion: P05RAJ
SMBIOSMajorVersion: 2
SMBIOSMinorVersion: 7
SMBIOSPresent: TRUE
SoftwareElementID: Phoenix BIOS SC-T v2.2 P05RAJ
SoftwareElementState: 3
Status: OK
SystemBiosMajorVersion: 0
SystemBiosMinorVersion: 1
TargetOperatingSystem: 0
Version: SECCSD - 2

The CPU installed in the board is an Intel® Core™ i3-2370M CPU @ 2.40Ghz, 2400 Mhz, 2 Core(s), 4 Logical Processor(s)

Is there a custom firmware I could use to help with this problem or any other advice you can give?

Thank you for your time

Anthony

[DeathBringer]

Post screenshots of first (CPU) & third (Mainboard) tabs of CPU-Z with current CPU.

[cookertron]

Post screenshots of first (CPU) & third (Mainboard) tabs of CPU-Z with current CPU.

Hi DeathBringer,

I've taken the shapshots and images.

https://drive.google.com/open?id=0B4Xepy...EFHY20wNEE

It was a while coming because I had to order some thermal paste to replace the CPU.

Anthony

[DeathBringer]

This BIOS already has microcode for i3-2370M.
But your laptop is based on HM70 chipset. HM70 has well known problem and can't run i3/i5/i7 more then 30 minutes.
Only hub(HM70) replacing will help. Or you can replace whole motherboard to new one with HM75, HM76 or HM77.
Another solution: put your laptop to sleep state every 25-29 min. This reset a timer. You can use Task Scheduler to do it.

[cookertron]

This BIOS already has microcode for i3-2370M.
But your laptop is based on HM70 chipset. HM70 has well known problem and can't run i3/i5/i7 more then 30 minutes.
Only hub(HM70) replacing will help. Or you can replace whole motherboard to new one with HM75, HM76 or HM77.
Another solution: put your laptop to sleep state every 25-29 min. This reset a timer. You can use Task Scheduler to do it.

Brilliant! 

How realistic is changing the chipset they seem pretty unmovable? I still have the old motherboard which I'm guessing has either one of the HM75/76/77 chipsets so sourcing a replacement won't be an issue (unless it's fried).

Thank you for your advice

Anthony

[jtwg]

Hi, I was searching for a same solution and found a hackaday(https://hackaday.com/2016/11/28/neutrali...nt-engine/) article that cleans the BIOS of ME and in the process removed the 30 minute shutdown function(https://www.coreboot.org/pipermail/coreb...82016.html). I've been out of the game for so long and all i have is the MFC Bios update program that i downloaded for my NP300E4C with bios version P05RAJ. I need to extract the rom to be able to apply the ME cleaner. Any help will be appreciated.