Password Generator Code resets Dell Laptop BIOS
Last week I ran into a very annoying problem involving a Dell laptop I bought from eBay. Everything seemed OK at first, but when I tried to enable Intelís virtualization technology in the systemís BIOS, I realized the entire BIOS had been password protected. Aggravated, I emailed the seller and kindly asked him to provide the password. After receiving his response, I was way more than aggravated. After deciphering his nearly incomprehensibly broken English, I realized that he neither had the password, nor would be willing to refund the item. Mind you, I hadnít even asked for a refund. Now I was left with a password protected BIOS and would have to deal with it myself.At first, I thought it would be a minor inconvenience. An old trick to reset BIOS passwords is to locate, remove, and reinstall the CMOS battery on the motherboard. This clears the settings in BIOS to the factory defaults, including the passwords. I acquired the laptopís schematics from Dell and spent four hours disassembling the laptop, unplugging the CMOS battery, plugging it back in, and reassembling the laptop. To my horror, the password was still set upon turning the computer back on. It appears about a decade ago, Dell wised up and began storing BIOS passwords in a small flash chip on the motherboard. This is especially true in their laptops and I assume it was done because laptops have a high theft rate. Researching the topic online showed that Dell assigned an unique master password to each individual computer BIOS based upon the computerís service tag. So, an alternative route would be to contact Dell, claim ownership of the laptop, wait for the claim to go through, then request the master password Dell generated for this specific computer. This wasnít an ideal solution since this process would take several weeks or even months at the minimum. During my research I noticed that several eBay sellers were providing these master passwords for a small fee. Obviously, this meant that the means to generate these codes oneself was available somewhere on the internet. Thatís when I ran across some source code created by Russian hacker hpgl who found the algorithm Dell was using to generate these master passwords for the 595b and 2a7b-type BIOS. You can find the code below:
You can also find a compiled Windows binary here: Windows Binary
I entered my service tag into the software, and out popped some random letters and numbers. I tried the generated characters in the BIOS and it worked! The seller still received negative feedback for being a jerk, but at least now I have access to all my computerís features. Good luck!
UPDATE: WordPress decided to ďhelpfullyĒ make some changes when I pasted the source code in. Iíve corrected the errors. My apologies to everyone who had to do all those find and replaceís.
Primary Computer Service, Inc.