I have a HP Probook 4520s laptop. Recently, after a “critical” automatic update from HP, it flashed a new BIOS update. The update worked, but on the final restart it just started an on\/off cycle. I left it for an hour, then unplugged the power because it was clear that the bios was not working.<\/p>\n
I tried the following method from a forum:<\/p>\n
1. Get a USB memory stick that is <= 4GB and format it to FAT (FAT16) in windows. (It doesn’t work to use a larger memory stick formatted to FAT, or a memory stick formatted to FAT32)
\n2. Make this directory structure on the USB memory: \\HEWLETT-PACKARD\\BIOS\\CURRENT\\
\n3. Download the Softpack with the BIOS update for your system from the HP website. Extract the spxxxxx.exe with winrar or a similar software, or run the program and look in the C:\\SWSetup\\spxxxxx\\Rompaq\\ directory for a file called 68XXX.bin (XXX differs on different systems).
\n4. Copy 68XXX.bin into the \\HEWLETT-PACKARD\\BIOS\\CURRENT\\ directory on the USB memory.
\n5. Open the archive C:\\SWSetup\\spxxxxx\\Rom.cab and extract efibios.sig to the \\HEWLETT-PACKARD\\BIOS\\CURRENT\\ directory. Rename efibios.sig to 68XXX.sig (replace XXX with the same letters as in your 68XXX.bin).
\n6. Insert the USB memory stick into a USB port on your computer. While pressing Win+B, power up the system.
\n7. The Caps lock led will flash continously, and the computer will read the file from the USB stick.
\n8. In under a minute the system will shut down. Remove the USB stick. The system will power up again and immediatly shut down. The system will power up again, and you will be greeted with a screen that says the your BIOS was recovered. \ud83d\ude42<\/p>\n
The PC read the flash drive for 10 seconds then shut off. I also tried a SD card and CD. Am I doing anything wrong? Am I downloading the wrong version to flash? (First BIOS version, factory) Thanks<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"iawp_total_views":14},"question-category":[47],"question_tags":[],"class_list":["post-4538","question","type-question","status-publish","hentry","question-category-hardware"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question\/4538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question"}],"about":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/types\/question"}],"author":[{"embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/comments?post=4538"}],"wp:attachment":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/media?parent=4538"}],"wp:term":[{"taxonomy":"question-category","embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question-category?post=4538"},{"taxonomy":"question_tags","embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question_tags?post=4538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}