In the beginning, the laptop had a short on the main power line. It was a damaged SIC631 exactly U8006. I replaced it and the laptop turns on and displays an image. However, when trying to boot from HDD, SSD or USB, it freezes while booting the system. But e.g. MEMTEST works fine. All devices are disconnected. I also replaced the RAM. And nothing has changed. I have no idea what else I can check and how to find the cause of the crash.
Technical Support ACER G9-792 P5NCN/P7NCN REV 2.0 Working in bios but freezes during system boot
- Thread starter Ipart
- Start date
MAYBE intel gpu damaged when that ic is burnt . remove l8006 from board and test . you must disable uma graphic and test . if by removing l8006 system haven't pic you must replace the cpu .
When i removed coils laptop no work. Shutdown one second after push power button. Is there any other way to disable cpu graphics and force to use only dedicate graphics?
no way , you must replace cpu .
1. Do you have Oscilloscope? Check LPCFRAME if u have frequencies.
2. How many Amps do u have on SMPS..? 0.030 - 480 - 0.030 ...??
3. Check resistors connecting CPU and BIOS pins.
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Thanks for your answer. Yes, I have an oscilloscope but unfortunately I had to return the computer to the client.
Ok.. for next one.. will always be another one
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