PC doesnt boot .has a red light (beside power button) flashing 3 times. not even bios shows up

May 17, 2018
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my pc wont boot , not even to the bios screen with the red light (beside power button) flashing 3 times repeatedly. it is an old zebronics pc . it is like atleast 6 years old. i tried reseating every connection i could see , cleaned the memory. please help me out of this
 

Seyed22Shaheen

Notable
Apr 4, 2017
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960
Does the CPU fan Run when you turn it on? It might be the CMOS battery in the MOBO since the laptop is so old and not used for long time the CMOS battery could have gone bad it was the same case for me with my 9 year old laptop.
 
May 17, 2018
3
0
10


 
May 17, 2018
3
0
10

I don't even have the need to press the power button . The PC boots up automatically when plugged in. I don't remember the model of the PC as it is an old one. Thank you very much for spending your time to help me