SQL Server 2008 :: Reading Application Event Log To Remote Computer

I have a remote server where I dont have RDP access.

I opened Powershell and wrote the below query to read some of the message, but getting error:-

Clear-Host
$Machine = "XXXXX"
#Get-Eventlog -Logname System -ComputerName $Machine -newest 1000 | Where-Object {$_.EventID -lt '100'} |

Error Message:

[XXXXX] Connecting to remote server XXXXX failed with the following error message : WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer. By default, the WinRM firewall exception for public profiles limits access to remote computers within the same local subnet.

+ CategoryInfo : OpenError: (XXXXX:String) [], PSRemotingTransportException
+ FullyQualifiedErrorId : WinRMOperationTimeout,PSSessionStateBroken

How to read the data (app/system eventviewerlog) using xp_cmdshell from SQL Server Mgmt studio itself?