Why does my PC some times display on my monitor and some times not?

[Lucas Singh]

It's the weirdest thing ever but my PC some times displays on my monitor and often not, and to get it display I have to do some weird stuff like swapping the ends of the HDMI cable and changing the power outlet, very strange. What gets even stranger is that the monitor works perfectly fine for other HDMI devices like my Xbox 360 and PS3, even my laptop which i'm using right now cause I can't display my PC! 🙁 I took my PC into a shop yesterday and they said it worked on two different monitors using both HDMI and VGA. I was only able to get it work last night but I can't get it to display now. Also my keyboard and mouse only light up when the PC displays, I noticed that when it's not displaying my keyboard and mouse won't light up. Very mind boggling!

 

[Tradesman1]

Have you tried a different cable....or a different type of cable?

 

[Lucas Singh]

I tried VGA and it worked but now it won't work again!

 

[Tradesman1]

Might be monitor itself, could try blowing it out with compresses air, may have dust accumulation and/or be overheating

 

[Lucas Singh]

I tried my Xbox 360 on it just a minute ago and it works fine /= I have a feeling it could be the Power Supply, i'm using a Cooler Master 525 Ex2treme

 

[Tradesman1]

Might see if you can borrow one to test w/

 

[Lucas Singh]

But the thing is that I brought into a store to see if it would work, and the technicians got to work simply. I think it's something with the outlet maybe? I got it to work once last night when no other electronics were being used in the house and now I cant /= And also earlier today I tried a different outlet and it worked, but the second time around it didn't work like my first outlet

 

[Tradesman1]

Might try on a different circuit in the house, find what you are currently using (can flick breakers till no power to current outlets, then find a different outlet that is working - you may have a bad ground or neutral in the circuit you are currently trying to run on

 

[Lucas Singh]

I tried different outlets and it still wasn't displaying anything so I opened up my case and moved the cmos jumper over a pin and it some how worked! 😀

 

[Tradesman1]

Glad to hear working, sounds odd, but have seen stranger things 😉