At first I would check what the 88 post code means. It should be written somewhere.
Secondly I would check the boards CPU support list - most manufacturers have such lists.
And at last I would check how the board works with other memory stick.
I would be also better to know full computer specs.
Gigabyte GA890XA-UD3 | AMD Phenom II 905e 4x2,5Ghz | Scythe Ninja | 4x Kingston 2048MB 1600Mhz HyperX | ASUS Radeon HD5770 1024MB | 2xSamsung 500GB 2,5'' | Chieftec SMR-250U mobile case with 100GB Hitachi SATA hdd| Gigabyte GT Odin 550W | CHIEFTEC WH-01B-B-500 | Benq V2410
Windows Vista x64