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Dear Sir/Madam,
Thank you for contacting MSI Technical Support.
1 Long, 2 Short beeps, it means a video error has occurred and the BIOS cannot intialize the video screen to display any additional information. Please make sure the Radeon 9250 Graphigs card is in good working condition and it is installed properly and closely to the motherboard.
MS-6330 Lite provides One AGP (Accelerated Graphics Port) slot which is AGP specification compliant and supports AGP 2.0 1x/2x/4x. AGP 3.0 cards is identical to that of AGP 2.0 cards to retain backward compatibility. Radeon 9250 Graphigs card should be supported by this motherboard according to the h/w spec, but we haven't tested them and cannot confirm that if they are compatible.
Or try to clear CMOS referring to the manual then with only CPU w/ heat sink, memory and video connected retest system to check again.
Best regards,
MSI Technical Support.
-Sami