Is my computer able to be fixed?

You say it just beeps at you, is it a constant beep, beep, beep at regular intervals that continues until you switch it off - then you have a memory module error. Try simply taking the module out of its slot (all of them if more than one) and then put them back in. You may find it will boot to BIOS and then you can solve your other BSOD error. While you have the side cover off have a look at the cables to the drives (HD and CD) and remove and refit. Don't forget to unplug the PC from the mains supply and ground yourself before touching any of the components inside the box. Memory modules are particularly sensitive to ESD (Electro-Static Discharge)