To Reset Windows Server 2008 R2 DC Admin Password

I got below solution when I tried to figured-out howto reset my forgotten DC Administrator account.

RESOLUTION:
1) Mount the Windows 2008R2 iso (i.e. SW_DVD9_SQL_Svr_Standard_Edtn_2008_R2_...9588.ISO)
2) Boot from iso.
3) Click on Repair your computer
4) In the System Recovery Options dialog box, select Use recovery tools ... option and click Next button.
5) Click the Command Prompt.
6) In the cmdline, backup the utilman.exe file from the C: or D: as shown below:
move d:\windows\system32\utilman.exe d:\windows\system32\utilman.exe.bak
6) Copy the d:\Windows\System32\cmd.exe and rename with utilman.exe as shown below:
copy d:\windows\wystem32\cmd.exe d:\windows\system32\utilman.exe
7) Restart.
8) Click the Ease of access icon.
9) In the cmdline, type the following command below to set new password of the DC Administrator as shown below:
net user administrator *

Fix 'Download patch definitions' in VMware Update Manager task On Queued

Got this issue when Recent Tasks in vCenter showing 'Downlad patch definitions' on Queued state.
RESOLUTION: 
1) RDP to vCenter server.
2) @cmdline type services.msc
3) Locate for VMware vSphre Update Manager Service and Stop and Start services again.
4) In vCenter server Recent Tasks it should shows on Completed state.

VMware - Fix/clear ESXi Host Physical Memory Module Socket Warning

Got this issue which one of the ESXi host in the cluster has alert Host Memory Status Warning or Hardware Status Physical Memory Module Socket Warnings as shown below screenshot:

RESOLUTION:
1) Select affected ESXi host > Configuration > Security Profile and start SSH services.
2) Enter Maintenance Mode on affected host.
3) SSH via PuTTY unto the host and enter root login+passwd.
4) Restart ESXi management agent as shown below (borderlined on-Red):

5) Select+right-click ESXi host to reconnect in vCenter server.
6) Select+right-click ESXi host to reconnect in vCenter server.
7) In vCenter, select affected ESXi host > Hardware Status tab and click Reset sensors then Update link and you will notice that all warnings will be set to Normal as shown below screenshots: