bios to hp probook 4520s my laptop became working without any pic or sound only black pic thanks i hope who`s own this file sure working right thanks alot
I don't think these laptops support recovery flashing, and I don't know what kind of BIOS chip they have, but if you want to flash you'll 100% need a chip programmer. But, still it can be not even BIOS, portable computers have another hardware problem called VGA chip. if you have defective VGA chip then your computer is piece of trash. Very little percentage of them can be repaired, if it has nvidia chip, percentage is below 5%.