Dell Latitude 7420 sọc hình , treo logo nguyên nhân đến từ Ram Onboard

This Dell Latitude 7420 came in with display artifacts while booting into Windows, occasional freezing at the Dell logo, and random shutdowns. After performing hardware diagnostics and basic testing, Trong Nhan Fix determined that the issue was caused by faulty onboard RAM. Since the memory is soldered directly to the motherboard, repairing this model is far more challenging than replacing a standard RAM module. Watch the full video to see the troubleshooting process, onboard RAM repair, and final results.