Not able to start elasticsearch

I have just started reading about elasticsearch concept so I am new in this concept. I have downloaded zip file of elasticseach as I am using windows. But after running batch file from cmd with admin access, getting exception.
I am sharing exception from log file:

org.elasticsearch.ElasticsearchException: failed to load metadata
at org.elasticsearch.gateway.GatewayMetaState.start(GatewayMetaState.java:187) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.node.Node.start(Node.java:786) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:317) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:402) [elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) [elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) [elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127) [elasticsearch-cli-7.9.2.jar:7.9.2]
at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) [elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-7.9.2.jar:7.9.2]
Caused by: java.nio.file.AccessDeniedException: C:\elasticsearch\elasticsearch-7.9.2-windows-x86_64\elasticsearch-7.9.2\data\nodes\0_state_1_Lucene84_0.doc
at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:89) ~[?:?]
at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) ~[?:?]
at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) ~[?:?]
at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:235) ~[?:?]
at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:478) ~[?:?]
at java.nio.file.Files.newOutputStream(Files.java:224) ~[?:?]
at org.apache.lucene.store.FSDirectory$FSIndexOutput.(FSDirectory.java:410) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.store.FSDirectory$FSIndexOutput.(FSDirectory.java:406) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.store.FSDirectory.createOutput(FSDirectory.java:254) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.store.LockValidatingDirectoryWrapper.createOutput(LockValidatingDirectoryWrapper.java:44) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.store.TrackingDirectoryWrapper.createOutput(TrackingDirectoryWrapper.java:43) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.codecs.lucene84.Lucene84PostingsWriter.(Lucene84PostingsWriter.java:107) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.codecs.lucene84.Lucene84PostingsFormat.fieldsConsumer(Lucene84PostingsFormat.java:420) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.write(PerFieldPostingsFormat.java:168) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.FreqProxTermsWriter.flush(FreqProxTermsWriter.java:97) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.DefaultIndexingChain.flush(DefaultIndexingChain.java:240) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:379) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:480) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:660) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3738) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3713) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3692) ~[lucene-core-8.6.2.jar:8.6.2 016993b65e393b58246d54e8ddda9f56a453eb0e - ivera - 2020-08-26 10:53:36]
at org.elasticsearch.gateway.PersistedClusterStateService$MetadataIndexWriter.flush(PersistedClusterStateService.java:516) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.gateway.PersistedClusterStateService$Writer.addMetadata(PersistedClusterStateService.java:727) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.gateway.PersistedClusterStateService$Writer.overwriteMetadata(PersistedClusterStateService.java:702) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.gateway.PersistedClusterStateService$Writer.writeFullStateAndCommit(PersistedClusterStateService.java:587) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.gateway.GatewayMetaState$LucenePersistedState.(GatewayMetaState.java:492) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.gateway.GatewayMetaState.start(GatewayMetaState.java:165) ~[elasticsearch-7.9.2.jar:7.9.2]
... 10 more
[2020-09-26T00:44:01,638][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [PRADNYAP_PERSON] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[failed to load metadata]; nested: AccessDeniedException[C:\elasticsearch\elasticsearch-7.9.2-windows-x86_64\elasticsearch-7.9.2\data\nodes\0_state_1_Lucene84_0.doc];
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:174) ~[elasticsearch-7.9.2.jar:7.9.2]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) ~[elasticsearch-7.9.2.jar:7.9.2]
at

Can you please help me what is done wrong in installation.

Thanks in advance

It's complaining that it cannot access that directory. Are you sure you have permissions to it?