You should not select Database Type as "All". Select the correct DB. In my case its "Micorsoft SQL server". If you select "All" it wont dispaly only the common KPIs
The memory may be in cache.If you are in a linux machine use the below command to clean it. Then try the instillation again. echo 3 > /proc/sys/vm/drop_caches
See if your PATH environment variable is setup properly. Any system should have atleast the below on PATH
;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;
Add the above if not there.
Once added, open a new cmd / bash and try:
whe...