Cannot backup database.

Hi Guys,

I'm a newbie here. i have a problem where i cannot backup m database. i'm going to do the upgrade of my Solarwinds (NPM, SAM and IPAM). But when i do backup, it hang on 60% - 70% of the backup. im using MSSQL 2005 Express but my database is size 27GB. im going to upgrade my MSSQL too. Anyone can help me regarding this?