Having problems with your HP Compaq Presario C306US Notebook ?

Black screen 4 beeps at start up

\015 I have a c306us. Hp tech support says the 4 beeps at start up means a bad graphics card. I have a black screen. nothing else happens. No response to hitting F10 while starting up. I was told this means you need a new motherboard. I replaced the mother board witha refurbished one I still have the same code? Any ideas?\015

Answers :

refurbished motherboard may have corrupted bios inside
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