Hi. I was playing Portal 2 earlier and the PC rebooted without warning. This was the first time this happened so I ignored it. Then it happened again while surfing the web. I googled for help and someone suggested updating the BIOS. I checked for an update and proceeded to update. While updating, the PC restarted…and I was greeted with 2 short beeps. I checked beep codes and it looks like parity circuit failure or something. I reseated the 1 stick of RAM in another slot but it still beeped. Reseated the GPU, still beeped. Used onboard graphics, still beeped. Removed RAM and booted PC and got a repeat of a long, continuous beep. I also tried resetting the BIOS by removing the CMOS battery and using the jumpers to no avail. I'm completely stumped. Any help is greatly appreciated. Thanks. Here are some specs: OS: Windows 10 Pro HDD: Toshiba 500GB GPU: Evga GTX 650 1GB CPU: AMD A6-6400K Richland Dual- Core 3.9 GHz Socket FM2 65W Mobo: ASRock FM2A55M-VG3+ RAM: Kingston 4GB DDR3 x1 PSU: ThermalTake TR2 600WW Edit: I've been using the PC for about a year now without problems so I don't know what caused it. Well I've had this 5 beep error from before but it's nothing major. Boots fine after restarting.