Hi there, I've just built a PC, all components are new except the case, DVD drive and one hard drive. It was up and running for about an hour last night, but while running updates I noticed a burning smell and it suddenly shut down.
Now, when I turn it on, the monitor says "No display" and sits on standby. All the components are powering up fine (visibly) - all the fans come on and the LEDs are working.
What I've done: I've tried a different GPU, different monitor cable and a different monitor but with the same issue each time. I also checked the thermal paste on the cooler and reinstalled it, checking it was locked down tight.
Motherboard: Asus Z170M-PLUS LGA1151
CPU: Intel Core i5-6600 3.30GHz
Aftermarket cooler: SilenX EFZ-120HA5
GPU: MSI Geforce GTX 1070
PSU: Corsair RM750X
RAM: Corsair 16GB (2x8) DDR4 3000Mhz
Storage: 500GB Samsung 850 EVO, 1TB HDD
OS: Windows 7 Home Premium
Obviously I'm disappointed and worried that something expensive has cooked itself, it seems the logical suspects are the CPU or the motherboard, but I'm not sure how to proceed. I'd really appreciate some help - it's my first build myself, I painstakingly followed guides and instructions and this aside everything ran fine to begin with.