@truceFR
Give this a try.
Files are defaulted for the following configuration
BIOS A24
i5-3340M
1600x900
If your display resolution is lower, then use Config-LoRes and rename it as Config
I also include DSDT-A23 for BIOS version A23, you'll just need to rename it in the Config file
If you have different CPU other than the ones I included, i5-3340M and i5-3320M, then you could use SSDTPrGen.sh to generate your own
Place it in ACPI, rename it to whatever you like ...maybe SSDT-PM.aml? But make sure to rename it in the Config file as mine is defaulted to i5-3340M.aml
Upgrade your BIOS to A24 or A23 to use my files otherwise you probably get the same automatic sleep right after boot.
I see you have A20, I could probably patch that for you, but I'll need the vanilla DSDT exported from your system.
Good luck
E6430_A24_OC_0.6.8.zip