Computer receives power but no BIOS

[NicholasJB1996]

So this has been happening for a while, one day I tried booting up my pc, I'm getting power to the CPU fan, system fan, all leds are lighting but no display on monitor (usually keyboard lights up when I get BIOS) it doesn't light up. I read on some forums that a failing PSU can cause this problem so I purchased a new EVGA 600W PSU. Got the PSU today and installed it. Still the same problem. (Note: Sometimes the PC does manage to boot) It eventually booted up tonight after a few hours of constantly switching off PSU disconnecting cables and switching ram slots. Could it be that my CPU is failing or a stick of ram could be faulty?

 

[13thmonkey]

given that it can run, it must be the mobo, if it were anything CPU related i'd expect it to happen more consistently.

I had an asrock 775 dual vista board that would boot fine with IDE drives, but would do similar things (i thought of it as needing to be 'warm' i.e. would work on the 3-4th attempt) when using a sata drive.

 

[NicholasJB1996]

Its the board, I got the other pc and swapped in parts. Using my CPU on the other board with a no brand power supply boots the PC. Using my PSU and my CPU on the other board boots the pc. Using the other CPU and my PSU on my board doesn't boot pc. Using the other CPU and the other PSU doesn't boot pc. So therefore it's the board. I'll buy a new board and when it gets here, if it really is the problem I'll pick your post as the solution.

 

[13thmonkey]

Its the board, I got the other pc and swapped in parts. Using my CPU on the other board with a no brand power supply boots the PC. Using my PSU and my CPU on the other board boots the pc. Using the other CPU and my PSU on my board doesn't boot pc. Using the other CPU and the other PSU doesn't boot pc. So therefore it's the board. I'll buy a new board and when it gets here, if it really is the problem I'll pick your post as the solution.

consider if this the time to upgrade...

 

[ElectronGuyzz]

You should try to re-install your CMOS battery if you haven't yet..
If you're not sure how to do it or what CMOS battery looks like, here's the tutorial, how to re-install it: https://www.computerhope.com/issues/ch000239.htm

Hopefully it helps!

 

[13thmonkey]

You should try to re-install your CMOS battery if you haven't yet..
If you're not sure how to do it or what CMOS battery looks like, here's the tutorial, how to re-install it: https://www.computerhope.com/issues/ch000239.htm

Hopefully it helps!

worth a try.

 

[NicholasJB1996]

It's not the CMOS battery, I removed to many times to count hoping it would solve the issue, it didn't. I'm pretty sure it's the Mobo because, my PSU and CPU both boot another board. I also just got my pc to start with my CPU and PSU. Also going to upgrade the board, is there a board that can run an AM3+ processor and also AM4? I'm looking to upgrade to a Ryzen I'm the future but not at the moment since I'm broke.

 

[ElectronGuyzz]

Did you also try RAM sticks on the another mobo?
The rams can easilly be the issue aswell.. If you got a chance to test them somewhere, then do it definetely.. When the rams are broken or you haven't put them in and you turn the PC on, then fans, leds and stuff like that will power up, even though without a display.

 

[ElectronGuyzz]

Also going to upgrade the board, is there a board that can run an AM3+ processor and also AM4?

AM3+ and AM4 are different sockets.
As far as I know, there shouldn't be any mobo that supports both of them.

 

[13thmonkey]

^ correct, is it time to send that 945 to pasture?

 

[NicholasJB1996]

I can't send it as yet, I'm too broke to buy a new mobo and processor right now. Also tried switching RAM sticks, bought a new stick and tried, didn't work. Pretty sure its the Mobo.

 

[ElectronGuyzz]

^ correct, is it time to send that 945 to pasture?

Yeah, kinda. 😀
In my opinion Ryzen series are the only decent CPU's that AMD has ever made.
Older ones had these annoying overheating issues etc..

I can't send it as yet, I'm too broke to buy a new mobo and processor right now. Also tried switching RAM sticks, bought a new stick and tried, didn't work. Pretty sure its the Mobo.

Then it's definetely a motherboard indeed.

 

[NicholasJB1996]

given that it can run, it must be the mobo, if it were anything CPU related i'd expect it to happen more consistently.

I had an asrock 775 dual vista board that would boot fine with IDE drives, but would do similar things (i thought of it as needing to be 'warm' i.e. would work on the 3-4th attempt) when using a sata drive.

It was the board the entire time, I got the board pretty soon but was too lazy to swap it since the problem barely occurred anymore. I swapped it now and problem gone.