Hey guys, I have a gateway dx4870 with a factory 300w power supply. I recently purchased an ASUS gtx 960 gpu, when I boot up the card gets power, and the fans start to spool up, but then the pc freezes on the bootup screen and beeps once, then three more times, and then shuts down. I booted it once and it immediately shut down. Keep in mind that it is frozen and I cant access my bios, but I'm pretty sure I'm running the latest update. I'm guess its the psu, but I have a gtx 550ti and the system runs it just fine. Any help would be appreciated.