System boots up and runs then screen goes black with 4 rapid beeps

[retiredgeek]

My system boots up and runs then after a few minutes the screen goes back, monitor light turns orange, I hear about 4 rapid beeps and then system must be rebooted. After rebooting and running for a few minutes it happens again.

Video Card, motherboard or memory?

 

[chrismash]

My system boots up and runs then after a few minutes the screen goes back, monitor light turns orange, I hear about 4 rapid beeps and then system must be rebooted. After rebooting and running for a few minutes it happens again.

Video Card, motherboard or memory?

What motherboard or computer manufacture is it?
If it's dell Memory read / write failure Memory failure