Discuz! info: MySQL Query Error

Time: 2017-1-20 3:41pm
Script: /bbs/forumdisplay.php

SQL: SELECT t.* FROM [Table]threads t
WHERE t.fid='7' AND t.displayorder IN (0, 1)
ORDER BY displayorder DESC, lastpost DESC
LIMIT 14
Error: Error writing file 'C:\WINDOWS\TEMP\MYD4F.tmp' (Errcode: 28)
Errno.: 3

Similar error report has beed dispatched to administrator before.