Why my laptop won't charging & turn on
Why my pc won't turn on
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@kuldeepkan80557 start of by checking the AC adapter. Make sure it provides proper voltages. Then check your charging cable. Make sure that the ends do not have any broken pins or debris in the, Next check the DC-In jack on your computer. Same thing,. Check for broken, corroded, or otherwise damaged jack. If all of that checks out ok, you do want to check the board side of the DC-in jack and see if you have power on there. If all of that checks out, you need to check your motherboard.
These are pretty generic checks but will be start to narrow it down. For now, you have a wide array of possibilities.
Verify that you computer is a HP ProBook 640 G2. If it is then you can download the Maintenance and Service guide from here
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