I have had SQL2000 and Windows server2003 running for years, very dependable. My server had to be rebuilt, and the firmware was upgraded ..and I had to apply Windows SP2. Well SQLServer2000 needed an upgrade also, so I installed SP3a. The restore of a large database caused a freeze (blue screen) although the same database copied fine through Windows explorer (70G file). Foxpro crashed on a SQLserver query, and an update to add approx 100,000 rows also gave the blue screen. The server diagnostics don't show a problem with the bios or memory or disk array (Raid 5) so I am thinking there is a compability problem. Would an upgrade to SP4 fix the problem. I cannot downgrade to the Windows 2003 (without SP) and SQLServer (without SP) as I have to apply the firmware. Would the STOP error on the blue screen (with the hex codes) help figure out what is going on?