Please help! Burned smell, PC doesn't turn on.

[Mikhail_10]

My new configuration (about two weeks old) is:

[PCPartPicker part list](https://pcpartpicker.com/list/fyXFr7) / [Price breakdown by merchant](https://pcpartpicker.com/list/fyXFr7/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel - Core i5-7600K 3.8GHz Quad-Core Processor](https://pcpartpicker.com/product/dQM323/intel-core-i5-7600k-38ghz-quad-core-processor-bx80677i57600k) | $228.66 @ OutletPC
**CPU Cooler** | [Thermalright - Macho Rev.A(BW) 73.6 CFM CPU Cooler](https://pcpartpicker.com/product/RTBrxr/thermalright-cpu-cooler-machorevabw) |-
**Motherboard** | [Asus - PRIME Z270-P ATX LGA1151 Motherboard](https://pcpartpicker.com/product/xwH48d/asus-prime-z270-p-atx-lga1151-motherboard-prime-z270-p) | $126.89 @ OutletPC
**Memory** | [Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3000 Memory](https://pcpartpicker.com/product/MYH48d/corsair-memory-cmk16gx4m2b3000c15) | $122.99 @ Best Buy
**Storage** | [Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive](https://pcpartpicker.com/product/3kL7YJ/samsung-internal-hard-drive-mz75e250bam) | $99.99 @ Jet
**Storage** | [Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive](https://pcpartpicker.com/product/44Gj4D/seagate-barracuda-1tb-35-7200rpm-internal-hard-drive-st1000dm010) | $46.88 @ OutletPC
**Video Card** | [EVGA - GeForce GTX 1070 8GB FTW Gaming ACX 3.0 Video Card](https://pcpartpicker.com/product/Pshj4D/evga-geforce-gtx-1070-8gb-ftw-gaming-acx-30-video-card-08g-p4-6276-kr) | $379.99 @ Newegg
**Case** | [Cooler Master - MasterBox 5 (White) ATX Mid Tower Case](https://pcpartpicker.com/product/zMVBD3/cooler-master-masterbox-5-white-atx-mid-tower-case-mcx-b5s2-wwnn-01) | $57.98 @ Newegg
**Power Supply** | [Corsair - RMx 650W 80+ Gold Certified Fully-Modular ATX Power Supply](https://pcpartpicker.com/product/Rp8H99/corsair-power-supply-cp9020091na) | $89.99 @ Newegg
**Monitor** | [Dell - U2715H 27.0" 2560x1440 60Hz Monitor](https://pcpartpicker.com/product/BpgPxr/dell-monitor-u2715h) | $448.79 @ Jet
| *Prices include shipping, taxes, rebates, and discounts* |
| Total (before mail-in rebates) | $1652.16
| Mail-in rebates | -$50.00
| **Total** | **$1602.16**
| Generated by [PCPartPicker](http://pcpartpicker.com) 2017-05-06 01:31 EDT-0400 |

Yesterday my PC went to sleep mode. In the morning I tried to turn it on but it didn't. Then I turned off PSU and unplugged it. When I turned it on again it worked for several seconds with strange sounds and blinking lights. Immediately after that a burned smell appeared and I unplugged the PC.

Please help me figure out what happened and how I can fix the problem?

Many thanks in advance.

 

[Froberg]

Well clearly you've fried something.
A sniff test is in order. If you've fried a component you can usually smell it quite clearly. So start picking it apart.
Did you leave a screw or something inside the case after assembly that could have shorted something?

 

[Vic 40]

Can try the psu outlet first,seems the most likely thing as i read. Even when buying such a good psu series can you get a bad one.

 

[Mikhail_10]

Can try the psu outlet first,seems the most likely thing as i read. Even when buying such a good psu series can you get a bad one.

Thank you all for your advices!

Here what I've tried for now. I disconnected all the cables from PSU expect for motherboard cable (wide and big one). I didn't change anything else. Then I turned it on and it worked! The CPU cooler was spinning, there weren't any burned smells.

Does it mean PSU is ok? What do you think?

Unfortunately I don't have an hdmi cable to connect my monitor directly to the motherboard in oder to figure out whether it is booting or not.

At that point my parents told me to stop experimenting with the PC in oder to not do any additional damage to hardware, and wait for a professional help.

 

[Vic 40]

wait for a professional help.

Do let us know what he/she finds.

 

[Froberg]

wait for a professional help.

Do let us know what he/she finds.

^What he said. 🙂