The problem with this laptop was all the power LEDs are on but it has no display, no boot screen showing on its LCD because of the faulty nVidia GPU chip connected with motherboard. It was sent to the Hp Service center but the owner was shocked becoz of the total cost of the repair so they decided to pull the laptop out of the service center. Luckily, for me, I was offered to do job and I’m happy that the problem was solved by some soldering tricks.
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HP TX1000 no video problem repaired by disabled technician