Lenovo B590 (HM70) CPU Upgrade

[speakerbox]

Hi,

I bought this laptop with a Celeron and fitted an i5 but it only works 30 mins. I've seen it only supports Celeron and Pentium processors, and that's why it automatically shuts down after that time. I'm with the Celeron at the moment.
Can somebody help me with the BIOS restriction?

The chipset is HM70

This is what is happening:
https://forums.lenovo.com/t5/Lenovo-3000...-p/1232039

Thank you very much

[TheWiz]

Are you sure those temperature readings are accurate? What does a tool like SpeedFan report after the machine is on for 15 minutes?

[speakerbox]

Yes mate, temperature readings are perfect, nice and smooth. It shuts down automatically after 30 min, because the BIOS is only for Celeron/Pentium processors. There are a few with this problem, BIOS doesnt support other CPU units.

[ostr95]

Hello,
Yesterday I just upgraded the CPU to the i3-2370M since it is faster than the stock CPU. The CPU is little bit older than 1005M and lenovo does not allow these CPU with motherboards. Everything is working smoothly, I'm not getting any overheats. I stressed the CPU with OCCT and some other tools. It works as it should. There is just one issue with it. The laptop power offs suddenly, exactly after 29 minutes 52 seconds after boot. To prevent this, I have to put in sleep my laptop then re-run it every 20-27 minutes so I won't lose my work. This is surely because something in BIOS blocks my CPU. After upgrade I got some more options and BIOS is reading that, but yet still 29 minutes and 52 seconds after "power on" it suddenly goes down. Tested with windows, linux and at BIOS. Could someone provide me fully working and custom BIOS with bypassed CPU check so I won't have to put my laptop in sleep every 20-25 minutes? I would really appreciate~!

CPU-Z Screen: https://gyazo.com/80634ed462df6357abb91b182d4e5c9a
https://gyazo.com/6e6c70365a52bae647f5e9bd13b99691

BIOS Dump/Results: http://rghost.net/6BgfWtTYg

Thank you, ostr95.

[DeathBringer]

Your notebook has 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.

[ostr95]

Your notebook has 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.

I think I will back to Celeron 1005M then. Thank you for the fast answer.

[DeathBringer]

You can use Pentium 2020M or Pentium 2030M.

[ostr95]

How about including microcode to the bios?

[DeathBringer]

Your BIOS already has microcode for CPUID=206A7, version 28, date - 04/24/2012.

[maildaemon]

Hey there guys,
I had an old B590 laying around and a Core i7 3632QM CPU. So recently I stumbled on the me_cleaner project - the aim is to disable the Intel ME and I realised maybe if it is the one responible for the 30 min. counter on the HM70 chipset we might get lucky.
The machine is:
Lenovo B590 - 20206
Bios Version : H9ET92WW (1.29)
Now I'll try to flash the modified BIOS version with ME removed. Afterwards do we need microcodes in the BIOS for the CPU (it is currently fully operational without it, but still only for 30 min.)?
I getting into it, fingers crossed