Abnormal failure rate have been discovered at HT B30 systems, the symptom is random freeze, random reboot or random blue screen.
For those customers that may have experienced this issue, the typical failure rate is (MTBF) 100h-1000h for systems equipped with m.2 SSD and >1500h for system equipped with 2.5" SSD.

The root cause is related to the signal quality of SVID signals, affecting the transition of SVID communication for CPU frequency/voltage.

Solution for units in field is BIOS update, which inhibit use of SVID communication.

HT B30xx xxC-xxx-xxxxxx

CHANGE(S) APPLIES FOR THE FOLLOWING HATTELAND DISPLAY® PRODUCT(S):
HT B30xx xxC-xxx-xxxxxx
Note: Customized models are ALSO affected by this Engineering Change Notification.


EFFECTIVE FROM:
Units delivered after 4 Feb 2019 updated during production.

CHANGE(S):
- Disable of Turbo mode and SpeedStep.
- Enable TPM 2.0 (not related to the described issue).


ADDITIONAL INFORMATION:

BIOS version for Intel® i5/i7 CPU:
HT B30xJ xxx-xxx-xxxxxx: B191.18A
HT B30xH xxx-xxx-xxxxxx: B191.18A

BIOS version for Intel® Celeron CPU:
HT B30xI xxx-xxx-xxxxxx : B191.18B

Note:
Disabling turbo mode will reduce the peak CPU performance with 15-20%; average CPU performance is not significantly affected, GPU performance is not affected.
After the BIOS update all units will have TPM module enabled.


Hardware solution with TURBO and speed step enabled will be available end Q2-2019, Serial Number higher than 9999.


For further enquiries regarding this Engineering Change Notification, please contact HelpDesk at Hatteland Display.