Question Installed a new cpu,now i have a black screen when booting.

[Fazalian]

Tried again with the old CPU,same thing.
Old Cpu is an i5-4440,new one is an i7-4790
Mainboard is an ASUS Z87-K. I bought such an old chip because it was one of the only ones that was compatible with my mainboard.
No Signal found on monitor.
All fans are spinning.
Mouse lights up for a split second after booting,keyboard stays dark.
The CPU does heat up after i boot it.(I removed the fan and felt it just to know)
I reset my CMOS via battery removal.
I connected the Mainboard to the Monitor with the HDMI.
Nothing worked,I still have a black screen(no BIOS,no Windows,"no Signal" message on monitor )
I do think the problem is with the PC rather than the monitor because my Mouse and Keyboard usually light up when booting,which they dont do now.

 

[ThatVietGuy]

Does everything go back to normal if you reinstall the old CPU?

Are there any missing pins on the underside of the new CPU?

 

[pietkroon]

did you install cpu correctly

 

[Fazalian]

Does everything go back to normal if you reinstall the old CPU?

Are there any missing pins on the underside of the new CPU?

No,the old one doesnt work now aswell,it worked up until i installed the new one.

Not that i could tell.

 

[Fazalian]

did you install cpu correctly

yes ,theres a triangle in one the corners of the cpu and the socket,they are matched.

 

[John Chesterfield]

Latest BIOS?

 

[Fazalian]

Latest BIOS?

no,didnt know i had to update it.

 

[John Chesterfield]

Well it's worth a try..

 

[Fazalian]

Well it's worth a try..

i dont know how to update it now that i cant see anything. is it possible to update it even with blackscreen?

 

[John Chesterfield]

i dont know how to update it now that i cant see anything. is it possible to update it even with blackscreen?

No. I'd put the old CPU in, do a full power drain, i.e. remove battery and short jumper pins and see where you're at then.

 

[Fazalian]

No. I'd put the old CPU in, do a full power drain, i.e. remove battery and short jumper pins and see where you're at then.

I put the old cpu back in and somehow it worked now.I updated the bios.Then i turned the pc off and replaced the old cpu with the new one.Tried booting,still blackscreen.

 

[John Chesterfield]

I put the old cpu back in and somehow it worked now.I updated the bios.Then i turned the pc off and replaced the old cpu with the new one.Tried booting,still blackscreen.

Did you perform a CMOS reset and short the jumper pins after updating BIOS? That's important too. If it doesn't work then, I'd try the i7 in another system if possible.