Hi Gabriele, unfortunately, this is what I know about HP Z1 and the story ends at this point. Sorry, I can’t help more than this. I hope you will find a solution for your PC. Best Regards Sasha

Thank’s for asking, and have great expectation from me. Unfortunately, I’m the only user of 2 Hp Z1 and I had a problem the screen suddenly become darker on one side. After I buy a new one a few years ago on eBay and replaced it, after 2-3 years the same thing happens. I did not throw away the old one and decide to make one working from two that I had. We changed the good one to be in one panel and we have seen that on Bad some wires are disconnected. My friend takes them to Mobilephone repair shop and they properly solder them. Last year I both another HP Z1 for pennies since the screen did not work! And I have replaced the panel with a fixed one, and Miracles appear. The screen is working perfectly and it still works. In the meantime, I have found on Aliexpress that I can buy new LED stripes and don’t need to solder them. My suggestion is to clean all connections on your screen. Try first with a vacuum cleaner, Use also gentile brush like one from your girlfriend for makeup or compresed air but not...

Hi to All that have the same problem. In most cases problem is that LED stripes are unsoldered from connectors. Carefully disassemble the screen and 2 Stripes are at the bottom of the screen. Be really careful when you try to disconnect cables from LED stripes and later take stripes to mobile phone service or try to do it your self, but they have a microscope with small iron blade soldiers and can connect them properly. This will restore your LED stripes to working conditions in 90% of cases. But for the future, buy some new LED stripes from AliExpress and replace them. I have 2 screens and on both, I needed to solder LED after some time. And they are still working. Just be very careful when you disassemble the screen and record which part goes where. Make photos to record procedures. Best regards Sasha