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Ir doesnt charge the batery , i bought a new batery and it discharged and even that it was plugged in it didnt charge the light was red, and now i plugg it and the red light blinks and it stops blinking know i dont know what yo do

This issue can be one of 3 things. First make sure all connections between the wall and the laptop are plugged in fully and firmly (Do not apply excess pressure.). If your laptop still does not charge and you find that the plug on the laptop is not firm and wiggly then it’s likely the power jack on the laptop that has broken and may need to be repaired at a shop. If the connections are all firm and it still will not charge the issue is likely either the power adapter which can usually be easily replaced with either a manufacturer replacement or a universal adapter. Now if thats not the problem then it may be the charging circuit which is usually part of the main-board, as main-boards are usually a good portion of the cost of a laptop labour aside as it is time consuming to swap out main-boards on laptops, it’s generally less cost effective to repair than replace at that point. Obviously repair costs can be mitigated somewhat if you are mechanically inclined enough to do them yourself and can source the parts needed.