Laptop does not start at first attemp

[Guest]

Hello everybody,

I have a problem with my Lenovo Thinkpad Edge E535 3260G laptop. It is a year old. The issue is that the computer does not start at first attemp. Sometimes, I have to turn it off and on more than 15 times before the computer succesfully does the POST test and shows the BIOS screen. In case I do not enable quick boot, the screen remains blank, by the way, the fan and the disk run. I disassebled whole laptop, cleaned of dust, checked thermal paste, looked for any visible problem. I tried to unplug components like disk, optical drive, both batteries, Wi-Fi. But everything was the same without components. I had done some complex diagnostic check with soft by Lenovo before, but no problems had been found.

Finally I found out that if I switch AHCI controller option for compatibility mode in BIOS, the problem dissapears.

Could anybody give me some advice?

Thank you very much, for any response.

 

[vesp3r]

hmmm try to put bios to default settings and see if this works out. If the laptop is year-old i take it it still have warranty so consult with lenovo techs and see if its safe to update your bios