Although I don't own this device at Bought Amazon I used it and another brand both of which had a weak connection. Most likely, a loose connection is due to the power connector the adapter is plugged into. I ordered a replacement plug, after which the charger fitted snugly and snugly. hehehehe. That is what I said. However, no matter what you do, DO NOT try to rock it until you see the charging light come on. You end up loosening it to the point where it can no longer be connected, or you could even short out the motherboard. This seems to be a very common problem on the y540 and y545. Bad design. Search for the information and you will see endless complaints about it. There's this Russian cat on YouTube who fixes these models and is just happy that people are buying this model because their money guarantees him endless business, he jokes, but there's some truth to that. also a joke. So ultimately, my advice is to keep your fans clean at all times, change your thermal paste regularly, have an extra thermal pad that works well, keep it elevated to allow airflow, and keep an eye on your warranty. . The charger itself has a unique transistor at the top that connects to the laptop. It has a certain value at which, if the laptop detects anything other than this required value, it will not recognize the charger and will not start charging. No, as far as I know, that can't be avoided. You tried. Beyond that, the laptop is great, but it's a very expensive brick unless you're keeping an eye on these things and it's out of warranty. this is only a year old. An extended warranty may make sense for some.
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