HP workstation problem: red light + beep on startup

best solution for red light no display with Maintenance and Service Guide.
pdf link:
www.facebook.c...[0]=AZUtMr0lAL-iaIoIQRFQIjHDAAn0f5qXirkN83TT-jKqNEqIEgZuCs9ztf2HOdUPkiBnf2Z_7Uc7HZXuvsp-Hr1TalnAmTYT3D-eYjLUqCIdFwLdvQkN9ZHRT3tGQTwmf7SbFoc5aqXQ1j5aa82ohyT85FG0Z4_fGZbxVY-lIqW32A&__tn__=H-R

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