Solution : https://service.sap.com/sap/support/notes/333918 (SAP Service marketplace login required)
Key words : 
windows event log additional key words ums insufficient quota buf, windows event log, bad/outdated device driver, potential corrupt data issue, insufficient quota, hardware component failure, unfiltered power surge, good clean backup, themost significant impact, consume excessive diskspace
Related Notes : 
       
| 159268 | Service Pack installation on SQL Server 7.0 | 
| 62988 | Service Packs for Microsoft SQL Server |