One night while playing out a laptop Acer 5755g, when you turn on lights up the power indicator was got cooler, a couple of times to blink the led hard disk and the laptop was switched off. And how many times did not try to turn — the same (checked just in case), tried with battery and without it.
Gave to the service centre — the diagnosis — burned a chip, which nVidia GeForce GT 540M. Soldered new, launched — works, back to me. Brought home, look in the device Manager and it shows me only one chip — Intel, and no hint of a second (before was two). Look in the system tray utility for managing NVidia graphics card, and it answer me error — saying there is no such equipment, and manage nothing.
Decided to reinstall the driver, started with Intel, then NVidia, but during setup of the second swears that there is no equipment. Ran programs such as Aida and others — see only Intel. On the advice of the service technicians reinstalled the OS — the same result, updated BIOS — no use. On Intellascan the chip is heated terribly, has launched a toy for the average test — the temperature of the chip increased to 90+. Took it to the service centre the second time, I decided that maybe a chip that is soldered, faulty wypali, soldered a new one — the same result. Now took a couple days to think it over, said that if can't find cause, it will return to its original state and give the laptop. But it is no easier. Here are some questions:
- Has anyone encountered similar?
- The reason is the hardware or perhaps troubles with?
- How is it possible that the discrete card is not detected, and the laptop works on the integrated Intel? Ie to the same Intel, too, was defective, and burned only NVidia and the laptop would not start at all.
- What are the chances that when you replace the chip damaged any contact and from for it such problems.
Of course, I did something stupid, apparently suffered during informal service center, relying on their experience (over 10 years) and hoped that there is nothing more difficult to kill. How to take the laptop to appeal to the official.UPD:
actually the problem was in the defective GPUs, which are double-set, third time lucky.UPD2:
the problem is not over, just a day all died, returning the laptop to diamantee condition. There's only one conclusion — the last time I soldered my chip, who has worked day and safely died. Gave the laptop to the official STS, waiting for the diagnosis.UPD3:
replaced the North bridge, it works.