Pc turns on but i get no display

[Oblique]

I recently bought an i7 7700 Processor, unfortunately after trying to install it i discovered that it wasnt compatible with my motherboard, (stupid mistake i know) i installed my old processor back in, plugged everything back, and my pc now turns on but doesnt display anything, my monitor just says no signal.

any help is appreciated

 

[Oussebon]

Is this a PC Specialist system? If so please post the full spec (from your order page)

 

[Oblique]

Case
FRACTAL DEFINE S NANO GAMING CASE
Processor (CPU)
Intel® Core™ i3 Quad Core Processor i3-8100 (3.60GHz) 6MB Cache
Motherboard
ASUS® PRIME H310i PLUS R2.0: Mini-ITX, LGA1151, USB 3.1, SATA 6GBs
Memory (RAM)
16GB Corsair VENGEANCE DDR4 2400MHz (1 x 16GB)
Graphics Card
6GB NVIDIA GEFORCE RTX 2060 - HDMI, DP - VR Ready!

Get Call of Duty: Modern Warfare with select NVIDIA GeForce RTX GPUs!
1st Storage Drive
1TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 7200RPM, 64MB CACHE
Power Supply
CORSAIR 350W VS SERIES™ VS-350 POWER SUPPLY
Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead)
Processor Cooling
STANDARD CPU COOLER
Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
LED Lighting
50cm UV LED Strip
Extra Case Fans
1x 120mm Black Case Fan (configured to extract from rear/roof)
Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking
GIGABIT LAN PORT + Wi-Fi (Wi-Fi excluded on H310I-PLUS)
USB/Thunderbolt Options
MIN. 2 x USB 3.0 & 4 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
Operating System
Genuine Windows 10 Home 64 Bit - inc. Single Licence
Operating System Language
United Kingdom - English Language
Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account
Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required)
Anti-Virus
Norton Security Deluxe 3.0: 1 User, 5 Devices - 1 Year Subscription
Browser
Google Chrome™
Monitor
AOC G2460VQ6 24" LED Gaming Monitor
Keyboard & Mouse
Corsair K55 RGB Gaming Keyboard (UK)
Mouse
ASUS ROG Pugio Mouse
Gaming Mouse Pad
Cooler Master RGB Hard Gaming Mousepad
Headsets
HyperX Cloud II Gaming Headset
Warranty
3 Year Standard Warranty (1 Month Collect & Return, 1 Year Parts, 3 Year Labour)
Insurance
Simplesurance Purchase Protection inc. Accidental Damage & Theft
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 12 to 14 working days
Welcome Book
PCSpecialist Welcome Book - United Kingdom & Republic of Ireland

 

[Oussebon]

I'm not saying this to be harsh - rather as context, and also for anyone else reading.

The first mistake wasn't buying and installing the wrong CPU, it was buying this spec . It's poorly balanced, overspending in some areas, underspending in others, doesn't optimise hardware (e.g. single channel RAM), is poor value, and will lead you to want to upgrade major components overly soon. For instance, the CPU. Buying something more balanced at the outset is better value because you don't need to start replacing expensive things like the processor for a long time.

I'd always suggest people considering buying a PC from PCS get an opinion on the forums first.

Your worst case scenario is that when trying to install the wrong CPU, you bent a pin on the CPU socket on the motherboard.

You've also voided the warranty, so PCS aren't obliged to fix what you did. Terms and Conditions 7.8 - replacing the CPU voids the warranty. (Plus if you did any damage to the system while upgrading, you'd fall foul of 7.7 too) https://www.pcspecialist.co.uk/terms/

I would, however, suggest you call PCS before attempting to use the system further and causing any further damage.

It could be something very simple. e.g.

- you plugged the monitor back into the mobo instead of the GPU once you were done with the upgrade attempt

- you didn't properly (or at all) clean the old thermal compound off the CPU and heatsink and perform a repaste when putting the cooler back

- clearing the BIOS with the jumpers will fix it

While it's not PCS's responsibility to fix it, if there is a DIY fix that can restore it to life, I suspect they might well try to help out. It's not like they want you to have a dead PC (and start buying things from other stores in the future instead of them)

If, after all that, it turns out you have bent the pins, you may be able to attempt a self repair. Likewise for anything else you might have damaged, perhaps you can fix it yourself with guidance.

But frankly, if basic fixes attempts don't work, it may be safer to send the system back to PCS for them to do any repairs. It's a cheap mobo (~£50 probably) plus carriage and labour I guess.