PC won't turn on-no lights, nothing

[ledhead11]

I believe its my PSU but I haven't had a chance to test it yet but it's around 5-7 years old and has many hours on it.

Had an event last night involving corrupting my OS drive(my fault) on my SLI rig below and spent some time doing re-boots and using a usb boot drive. Eventually salvaged the drive/OS and thought I was all good.

This morning I went to turn it on and nada, nothing, no lights, sounds, nothing. I've read many posts today about the paper clip test(will do tonight) and checking the basics. This MOBO has no lights as is so its impossible to see if its receiving any power to begin with. I'm trying to avoid resetting the CMOS but I might as a last resort.

I did read one post about sometimes the CMOS battery causing a similar issue. Anyone that can collaborate this?

I'm really hoping it's not the MOBO.

I've already ordered a new PSU simply because I was already starting to think the old one was nearing its time(never gave any signs though).

Any help or suggestions on this are greatly appreciated. Thanks in advance.

 

[Herc08]

Well, it definitely is not getting power, but it could also be the motherboard as well. You can replace the CMOS battery (usually a CR2032) but doubt that will fix your issue. I would check your cable connections and make sure it's secure.

Also what are your complete specs ?

 

[ledhead11]

Its the SLI rig in my signature. Running Windows 10-64bit w/ CU-ironically I just got this rig back to stable after CU. I believe the BIOS are F16 but not positive but I do remember they were the latest or really close. I had updated the BIOS about a year or so ago and had no problems with 'em and left them at that point. I just checked on Newegg and the PSU is a AX1200 I got in August 2011. That PSU honestly has some miles on it.

Just had a really nice session with it over the weekend and it was running great then. Unfortunately had a moment of stupidity with it last night after extending a partition on the OS disk and then did a restart. My primary display didn't show anything so I turned on my 2nd and there was some strange activity on the POST. It was moving the entire disk contents and I turned it off. I basically killed the MBR along with Windows's boot info. The last thing I used on it was a usb boot of mini partition pro or something similar. I used the power off button and left it till this morning after fixing the SSD on another computer. Reconnected the SSD and too my sad surprise nothing happened and that's never happened before. It's possible I may've loosened something and didn't realize it.

I'm going to check my case power switch connections when I get home. If I remember correctly they and the CMOS jumper are towards the bottom of the board. Just trying to avoid resetting the CMOS since I'm always worried about the 2 raids on the MOBO. There's even a chance I might have one of those batteries on hand from a 2 pack I got for a remote.

 

[ledhead11]

Well, got home a little while ago. I left everything unplugged(psu from wall and from MOBO). Reconnected and tried once more. It worked! During post it stated the BIOS had become corrupted and was copying from the backup. It finished and I re-configured the SATA controller's(this MOBO has 3- 1 Intel & 2 Marvell). Restarted and everything seems fine for the moment. I'm still keeping my spare PSU on order since it's only inevitable that this one will eventually go.

Thanks Herc08 for chiming in.

At the moment I think that all the fiddling I did last night must've just messed something up in the BIOS and when I used the power button to power down from the USB boot it just pushed it over the edge. Odd's are if I'd just used the jumper it would've been fine this morning.

 

[Herc08]

Probably, well I'm glad you got it working. Strange how it would not boot up. I would definitely reset to default settings in the BIOS when you get chance, and then change what you need to change. Gigabytes are usually easy to change the wrong thing.