1st of all, We could solve this for you but then you will not learn anything; what's purpose in that!
Here is what I found so far
Ports are down on Sw A. You did not use ports numbers correctly - you have connected PCs to wrong ports per diagram.
1 IP of PC is the same as IP of a Router. And IP address on switches vlan 1 is also wrong; DNS IP is wrong on PCs.
There should be NO same (identical) IPs on the same LAN network anywhere.
One or 2 of switches is missing default gateway.
I got to 78% so far.
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