Originally posted by shiyab
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DELL Latitude 7430 bios
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Hello, sorry but your original BIOS file is damaged.
Unfortunately, this happens again and again with these CH341A programmers.
The RT809F programmer is much better, especially since it also comes with good software from the manufacturer.
I use the RT809H myself and am very happy with it.
Try this version built from version 1.23.0 from Dell
There's nothing like a good backup of the original BIOS and a clean programming of the file.
Good luck
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Originally posted by Markus1741 View PostHello, sorry but your original BIOS file is damaged.
Unfortunately, this happens again and again with these CH341A programmers.
The RT809F programmer is much better, especially since it also comes with good software from the manufacturer.
I use the RT809H myself and am very happy with it.
Try this version built from version 1.23.0 from Dell
There's nothing like a good backup of the original BIOS and a clean programming of the file.
Good luck
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Hello, at 1.4 volts the BIOS doesn't even start; it needs 3.3 volts.
I also bought a used motherboard on Ebay (Lenovo T490s) and then noticed that a diode over D2101 was missing and only 1.5 volts came to pin 8.
In this case I replaced the diode and then it worked again.
It would also be helpful to have a picture of the soldered chip.
Upload a picture of your chip once.
I don't know how advanced their equipment and skills are for such repairs.
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Originally posted by Markus1741 View PostHello, at 1.4 volts the BIOS doesn't even start; it needs 3.3 volts.
I also bought a used motherboard on Ebay (Lenovo T490s) and then noticed that a diode over D2101 was missing and only 1.5 volts came to pin 8.
In this case I replaced the diode and then it worked again.
It would also be helpful to have a picture of the soldered chip.
Upload a picture of your chip once.
I don't know how advanced their equipment and skills are for such repairs.
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Originally posted by robbine75 View Post
Thanks for sharing the information. You're right. The diode around the bios chip is bad possible due to overheat when desoldering. I checked the diode forward bias is ~1.5v, which is not normal, it should be ~0.5v. The large bias pull down the vcc. I need to find the replacement, hopefully the problem would be solved.
And is it anyware related to USH part?
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Originally posted by Abracadabra100 View PostI found it on other side of MB, but 25q64 is low profile chip and i cant reach its pins without desoldering, but thats fine. Only problem i dont have tools with me to do that, but once i get them i will try to dump it
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Originally posted by has don View Postcan anyone plz unlock bios admin password
dell latitude 7430
LA-L581
SERVICE TAG 9X7GNN3Attached Files
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