No Display/pc Not Fully Booting Up

So I turned it off my PC yesterday because of a storm and after it was over I decided to turn it back on. The PC powered on fine but the monitor was not displaying anything and the only visible lights on the setup were all the mouse lights and the power on light on my Corsair 200R case. It's actually done this before but not for this long though. I've already tried to disconnect all unnecessary cables to attempt to perform a POST but to no avail.

CPU: AMD ATHLON X4 760K MOTHERBOAR MSI A78M E35 GPU: GTX 750 TI RAM: 8 GB PSU: CORSAIR 600W

 

I am assuming this is a desktop pc, with a separate wired Monitor. Sounds like you need to test the monitor itself and its connectors. If you have access to a separate working monitor, then you can check to see if the problem is the monitor itself.

 

I tried to connect it to my TV but still no display. I think that it isn't a problem with the monitor because the keyboard lights don't light now but the mouse lights still do.

 

Simply turning off a computer (or pretty much any electrical device) does not protect it from power anomalies during a storm. Computers in particular are still very susceptible to surges and spike and other anomalies because when the computer is shutdown, it is still in standby mode and the power supply is still providing +5Vsb standby voltage to several points on the motherboard.

The only true way to protect an electrical device during a storm is to unplug it from the wall. The next best way is to use a "good" UPS with AVR, and lastly, use a surge and spike protector. Of course, nothing can protect you from a direct lightning strike - not even unplugging - if the bolt is determined to get you!

Since you tried another monitor/TV and have the same results, you need to swap in another known good power supply and go from there. If you don't have or cannot borrow another PSU from another working computer, you need to have that PSU tested by a professional to make sure it is supply all the necessary voltages. Unless you have a decent oscilloscope or a true power supply analyzer (and know how to use them and interpret their results), the only way a "normal" user can verify a PSU is working properly is to swap it out with a known good supply.

You might also try that monitor on another computer - like the one you used to post this thread.

 

Maybe he posted from a phone or tablet?

I had a similar issue like this before not where there was an electrical storm but where i just wouldn't get any display no matter what monitor or display device i used on the computer desktop. What i actually did to fix it was reset the cmos battery and reseat memory as well as unplugging and re-plugging hard drive

 

I should probably reset the cmos battery but I have no idea where it is on my MOBO though

 

What causes problems when there is a power disturbance is having two separate power supplies which react differently and have a cable in between which then becomes the path that has to dissipate/absorb the voltage difference. In your case, it may well have been between the display and the video card; though a USB printer is also supsect.
Unplug everything from AC power. Press the power button on each device while it is unplugged or leave it unplugged for ten full minutes.
Plug things back in, turn them on (monitor before PC), and pray a little.
If things still stay blank, try a the monitor on a different PC.

 

This is what the CMOS battery looks like.
https://www.google.co.za/search?q=c...X&ved=0ahUKEwjoutahza_NAhWDJMAKHU5gAmsQsAQIGQ

 

If your date and time and boot disk have been staying correct, it is not likely you need to reset your BIOS.

I don't recommend you do this until you get video. Pulling the battery will change your date, typically by years and that can cause problems with your system files. Even with a dead battery, it should let you see the BIOS prompt.

You really do need to start at the wall and ensure you have good power. Unplugging everything is a good start to remove any standby voltages that may be holding a corrupt setting. Ensuring all cables are securely fastened may help too. Holding power buttons down does nothing with ATX supplies. There are no storage capacitors in that circuit on today's ATX motherboards. That's a myth based in fact from 20 years ago with AT Form Factor supplies. So again, I urge you to verify your PSU is outputting +12V, +5V and +3.3VDC within ±5% tolerances with no excessive ripple on any of the rails. How do you do that? By swapping in a known good supply, or having yours professionally tested.