Cheers, your bin file worked a treat, I wish someone would make it clear you need to match your board number to the correct bin file. Would make life easier and save a lot of questions....

you asked me for the board number then gave me the wrong bios, i don't know if your taking the piss or genuinely trying to help...

Unfortunately it did not work, it allowed me enter service tag, even get past the service menu by accepting the service tag number, but would not get out of manufacturing mode...

Cyborg-L15 MB TGL NEW PD 4C52D$KA 213047-1

Dell Part Number: 03WMC

Service Tag: 826KQL3...

HI Guys, need some help with this please, its a Dell Latitude 3520, originally it had bios password lock on it.

I have had the Bios chip on and off the board about 20 times time and I am really tired of doing it.

I made a mistake with the original bios file because I read it as a 16MB Chip at 1.8V rather than 32MB chip at 3.3v, I subsequently erased and wrote to that chip, I only realized this when I was about to post on the site asking for help as to why my system is dead, I thought OK now I now what the issue I can try work with what I have now and set about trying...