Hello, I have a little problem with my laptop (M17r4): once out of ten times I am able to boot normaly. Otherwise I get a repetitive one bip from the speakers and it doesn't boot. After some talk with Dell people, it could come from a corrupted bios. All the internal Dell diagnostics are OK (RAM, CPU,...). So I tried to flasn a new Bios ( am currently in A09). From Windows, the update program will execute very quickly and when it reboots, I get a "insyde H20-secure flash error : invalid firmware image". Then the system is reseted... If I try the update from a USB stick, I boot on the stick, run the official bios update and I get a " Test." And then nothing... I tried with official A09, 10, 11, 12 and even 08. Same behavior... I run Windows 7, legacy boot. If someone has any idea on how to fix that, your help would be appreciated. 😀 Thanks.