Hello,
I've purchased 2nd hand Dell Latitude E7470 i7-6600U and it works fine, except ... there are no TPM or TXT/Trusted Execution settings in the BIOS/Firmware. However, looking at the schematics I found the chip handling TPM (NPCT650JA0YX) soldered to the system board. Also, looking at the service tag and the product specifications, this device comes with TPM (and vPro) support (I know that devices sold in China, Russia are not allowed to ship with TPM but this should be reflected in the service tag). I can also login to MBex to configure, etc.
In the produce specs on the Dell website I see:
340-AUJZ : System Shipment, Latitude E747 0 (TPM enabled)
TR2C9 INFO,RYLTY,SI,TPM-MIDDLEWARE
4RRK5 INFO,ATMEL,TPM,FIPS,MODE,X5
the device is warranty-registered in the UK (but of course now out of warranty), and I wouldn't have heard that TXT can be disabled separately even when sold in China, Russia.
Even if the TPM chip is dead (there is no error message when booting, or anything ... TPM is just not present) the device should at least have TXT settings as all i7-6600U come with it?
I've tried to fix this following what I found on the internet (I tried out 3 different older BIOS versions through downgrading and I tried removing CMOS, main battery, memory and press the power button very long time to completely drain the systemboard), but none of those 2 ways worked.
Is there any way that the previous owner has on purpose disabled TPM and TXT through a "dell tech support repair CD" and can I enable it again through similar means? Or is there a "factory reset" firmware which I can flash instead to get everything back?
thanks!
I've purchased 2nd hand Dell Latitude E7470 i7-6600U and it works fine, except ... there are no TPM or TXT/Trusted Execution settings in the BIOS/Firmware. However, looking at the schematics I found the chip handling TPM (NPCT650JA0YX) soldered to the system board. Also, looking at the service tag and the product specifications, this device comes with TPM (and vPro) support (I know that devices sold in China, Russia are not allowed to ship with TPM but this should be reflected in the service tag). I can also login to MBex to configure, etc.
In the produce specs on the Dell website I see:
340-AUJZ : System Shipment, Latitude E747 0 (TPM enabled)
TR2C9 INFO,RYLTY,SI,TPM-MIDDLEWARE
4RRK5 INFO,ATMEL,TPM,FIPS,MODE,X5
the device is warranty-registered in the UK (but of course now out of warranty), and I wouldn't have heard that TXT can be disabled separately even when sold in China, Russia.
Even if the TPM chip is dead (there is no error message when booting, or anything ... TPM is just not present) the device should at least have TXT settings as all i7-6600U come with it?
I've tried to fix this following what I found on the internet (I tried out 3 different older BIOS versions through downgrading and I tried removing CMOS, main battery, memory and press the power button very long time to completely drain the systemboard), but none of those 2 ways worked.
Is there any way that the previous owner has on purpose disabled TPM and TXT through a "dell tech support repair CD" and can I enable it again through similar means? Or is there a "factory reset" firmware which I can flash instead to get everything back?
thanks!