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I apologize if this is a duplicate, but a search of the site did not shed any light on the matter. I am still using Sierra in my Probook, but a recent upgrade broke something. Now the screen dims to black right after the apple logo and can't get the screen to brighten up even after booting...

My laptop was running 10.11.6 without a glitch for many months, but after 2 weeks of down time it has developed a really strange issue. The computer boots to clover, clover starts loading OS X, and then the screen fades and goes blank, and never comes back. Right now, I can only boot in safe...

I have had this issue since my first ProBook Mavericks/Yosemite hack: the laptop will not wake up from deep sleep clicking the mouse, touchpad, or with a USB mouse. I need to lightly push the power button to wake up the machine. Never had this issue with my desktop hacks. Any...

Is the M.2 expansion slot useful? Has anyone succeeded installing an SSD and having it recognized by the system?

I finished my Clover/UEFI installation of Yosemite and Win7 using the guides in this website. Great job, guys! Thanks a lot. Everything works fine in the OSX end. However, there is an annoying problem regarding power down from the Windows environment: screen goes black, but the fan continues...

I have encountered a very unusual problem. I have a Probook 4430s dual boot (10.8.2/Win7) that I use frequently for presentations. My VGA port recognizes some but not all projectors; if I boot Win7, all projectors are detected. The 10.8.2 version only detects newer projectors; those projectors...

Has anyone gotten this processor to work?? I can get the OS to load using a Unibeast USB, but I cannot get the Probook Installer to work properly.