Black screen

[pete76]

after removeing my graphics card on start up fans & lights work but screen black then i get one long beep followed by 2 short beeps,even replaceing card no good. cant enter bios by pressing f1 or f10 to reset my system is HP S5615UK Slimline

 

[popatim]

The slimline does not have a gpu, it uses one built into the motherboard.
You can add in a pcie gpu but be sure it is half height/low profile (so it will fit) and low power (does not have a pcie power connector on it otherwise you will need a more powerful power supply)

 

[pete76]

was,nt to sure about card so was going back to onboard then i got black screen. read a few posts about resetting bios but cant even get to em