Hi,
I am having problems with the following laptop:
Brand: HP
Model: Elitebook 645 G10
Motherboard model: DA0X9TMB8D1 REV: D
It is an AMD 7000 series CPU laptop.
The problem is this: computer has came with BIOS password and also Windows locked to a company domain. I have done what I would normally do in such case:
1. Desoldered BIOS chip
2. Put it into the programmer
3. Made two .bin backups of original bios
4. I found a fresh BIOS image on the internet
5. Write the new fresh BIOS image to the machine
After I have done this the machine would not boot. It starts automatically when power is plugged in then:
1. F5 key LED lights up Orange
2. Power LED flashes White/Orange
3. Machine turns on and off like this a few times
4. Finally the F5 key LED turns off and the Power LED stays white
5. If I press power button in such condition I get 7 flashes on the CapsLock LED
6. Laptop reacts to the power button: if I press it long enough the machine turns off but then turns ON automatically and the cycle repeats
Under such condition I can see voltages on the motherboard going up: 3.3v, 5v are ON all the time. For a second or two I do get 1.8v for RAM and one of the CPU power stages (the high resistance one) goes up to 0.8v. Later these voltages go down and only 3.3v and 5v remain ON.
I thought this was just a corrupted image I downloaded from the internet. So I written back the original image. After soldering the chip back to the laptop I still get the same issues as described above. Power light flashing white / orange, Caps Lock LED flashing 7 times. Same voltages on the board.
I have checked the BIOS chip few times and it is programming and verifying fine each time. The soldering is done right: chip is always soldered back correctly with all the pins making contact. No components has been blowed off the board with hot air. Soldering has been done very carefully. I do not think my original BIOS would be corrupted. It has been read on two different computers but using same programmer (I have made two copies).
What could be the problem? I have seen on another forum someone having simillar problems with G8 and repaired by flashing the EC ROM.
I have attached both images of BIOS and EC ROM.
I am having problems with the following laptop:
Brand: HP
Model: Elitebook 645 G10
Motherboard model: DA0X9TMB8D1 REV: D
It is an AMD 7000 series CPU laptop.
The problem is this: computer has came with BIOS password and also Windows locked to a company domain. I have done what I would normally do in such case:
1. Desoldered BIOS chip
2. Put it into the programmer
3. Made two .bin backups of original bios
4. I found a fresh BIOS image on the internet
5. Write the new fresh BIOS image to the machine
After I have done this the machine would not boot. It starts automatically when power is plugged in then:
1. F5 key LED lights up Orange
2. Power LED flashes White/Orange
3. Machine turns on and off like this a few times
4. Finally the F5 key LED turns off and the Power LED stays white
5. If I press power button in such condition I get 7 flashes on the CapsLock LED
6. Laptop reacts to the power button: if I press it long enough the machine turns off but then turns ON automatically and the cycle repeats
Under such condition I can see voltages on the motherboard going up: 3.3v, 5v are ON all the time. For a second or two I do get 1.8v for RAM and one of the CPU power stages (the high resistance one) goes up to 0.8v. Later these voltages go down and only 3.3v and 5v remain ON.
I thought this was just a corrupted image I downloaded from the internet. So I written back the original image. After soldering the chip back to the laptop I still get the same issues as described above. Power light flashing white / orange, Caps Lock LED flashing 7 times. Same voltages on the board.
I have checked the BIOS chip few times and it is programming and verifying fine each time. The soldering is done right: chip is always soldered back correctly with all the pins making contact. No components has been blowed off the board with hot air. Soldering has been done very carefully. I do not think my original BIOS would be corrupted. It has been read on two different computers but using same programmer (I have made two copies).
What could be the problem? I have seen on another forum someone having simillar problems with G8 and repaired by flashing the EC ROM.
I have attached both images of BIOS and EC ROM.
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