I have a Dell XPS 8500, intel 3rd gen core i7-3770 4.3Ghz, 8GB RAM DDR3 PC3-12800, 2TB Hard Drive, running Windows 8 64-bit. PC is 1 year + 1 month old (warranty expired 1 month ago). It has been running fine until I initiated a restart, which hadn't been done for a week. On the reboot, it hung at the Dell splash screen with the F12 Boot Options in upper right corner, Blue progress bar doesn't progress at all and no response to any F-keys.
I tried another Power Supply, new HD, swapped RAM, & tried to boot from my recovery DVD, same results on all. So I ordered a motherboard, which was used but supposed to be 100% good. I installed it last night and got the 4 beeps on boot, so determined 2 of the memory slots were bad. When I put the RAM in the other 2 slots & booted, I got the same Dell splash screen with no response to any F-key. So, I guess it's not the MOBO and I'm returning it. My last idea is a bad CPU. There was no early indication of high CPU temps or PC problems before this. Does anyone know what other symptoms of a bad CPU are? I'm reluctant to just order one without some idea if it's bad.
Thanks for any help on this.