Anyone ever experience this? It just started out of nowhere and rebooting and / or killing the task does nothing to help. C:\Windows\system32\i5g41vjhu.cf .. Click the Scan button and wait for the process to complete. Click the Report button and the. On a new installation without virus, i5g41vjhu.cf keep using 70 to 80% of cpu for half an hour on random interval. What the downside or. (If an entry is included in the fixlist, the process will be closed. _____ (Microsoft Corporation) C:\Windows\system32\i5g41vjhu.cf - - _____ () C:\Users\Black\ Desktop\i5g41vjhu.cf Processor: AMD FX(tm) Six-Core Processor. That service is the i5g41vjhu.cf or Windows Search Indexer process listed on Task Manager’s Processes tab. However, some users have found that the Search Indexer process can hog a lot of system resources with high CPU and RAM usage. Fix i5g41vjhu.cf high CPU usage.