Checksum error is related to storage - ram or drives.
Test your ram with memtest86
Do a Checkdisk with repair on your Barracuda. (Windows Explorer, Highlight Drive. R Click to Properties, Tools, Check Now with repair)
Error Code 55 is to do with your Network Connections.
Error code 10 means one of your devices is faulty. Check Device Manager and see if a driver update will repair it. It could be your network card (ethernet or wifi).