Re: Dell Latitude E5550 FW status recovery error & unable to reboot

Right. I have extracted the BIN files from the executable, not my actual BIOS yet.
I haven't identified the correct chip yet from the boardview/schematics yet.

Is there an easy way to tell which one it is? There are two 8 legged Winbond chips that are connected to the CMOS battery, however one of them is for 32bit and the other for 64?

Re: Dell Latitude E5550 bios needed

Which physical chip is it on the motherboard of this laptop?
I'm trying to make a dump/reflash using an SPI programmer.

Re: Dell Latitude E5550 FW status recovery error & unable to reboot



Thanks but that is the one thing that didn't work. That executable forces a reboot which then gets permanently stuck. Also running it from the boot menu, or even FreeDOS, they all require a reboot before the bios is flashed.

I've also tried extracting the BIOS bin files using Dell_PFS_Extract and that produces 10 different bin files. I assume the BIOS needs to be flashed with one BIN file if using an SPI programmer right? It looks like it will have to be done this way....

Hi everyone

Since a month or so my laptop, a refurbished Dell Latitude E5550, has been unable to exit sleep mode or properly reboot. Upon waking from sleep mode it shuts down and reboots and upon attempting a reboot it just hangs at a black screen forever. The laptop was working fine for several years up until a month ago.

Initially I thought it was OS related, since it's running Arch Linux, wouldn't be the first time an update broke something but it also happens on Windows, Ubuntu live images and even a complete restored image from a year ago where it definitely worked...

Re: Question about solder paste vs solder balls

I think solder paste is easier to work with, since it's essentially many small balls suspended in flux. It sticks easily and the flux helps a lot in making a proper solder bond. You do need to keep in mind that it has less actual solder in it because flux makes up a large part of the volume.

As for longevity, it shouldn't matter if a proper solder bond is formed. Flux helps a lot.

Re: New Members - please post your introductions here

Hi all, I'm a tiny ant and am tired of other bugs in my hardware so am learning things like board repair and microsoldering.
Also from an environmental standpoint, fixing and reusing is much better than buying new.