PC only boots after CMOS Battery reset.

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floof0

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Jun 2, 2017
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My desktop will only boot after I reset the CMOS battery and BIOS by taking it out for a few minutes, putting it back in and turning the PC on.

My pc last worked well about three days ago when it randomly turned off, and wouldn't boot afterwards. The only thing I did to it before that was the night before I cleaned out the old thermal paste and reseated the cpu as it was getting hot. I played games on it that night and everything was working well and not hitting high temps on anything.

I have tried everything: Only booting with Mobo and CPU to check for ram beeps which checked out fine, got a new CMOS battery which did not help, checked the PSU with the paperclip method which checked out fine (fans on the PSU span up). I noticed that the only time the system would boot is when I took out the CMOS battery and then it would boot to a screen saying something like the bios settings have been reset. F1 to enter setup F2 to continue. If i navigate to the bios I can change settings but once I save and reboot the pc will black screen again and not actually save the settings (duh, to get back in I have to reset the CMOS). If I continue it boots into windows normally, if not a little slow. I managed to re install windows by taking out the battery every time the pc would restart and letting windows continue but that did nothing. I have also completely re-built the system and I am at my wits end here. I cant tell if its my psu going bad or my mobo or what.

Specs:
Motherboard: MSI H61M-P33(B3)
GPU: GTX 1050Ti which I have hardly had in as the cmos battery is under where the gpu sits.
CPU Cooler: Stock
CPU: i5 2310
HDD: Seagate 1TB HDD
RAM: DDR3 133mhs generic no brand name on the stick, (sorry)
PSU: 600w TACENS ECO (yeah, i went budget on the psu I know, some unknown brand)
OS: Win 10
DVD writer: LG super multi thing idk

These parts are all used except for the PSU and GPU. Thanks in advance. If you need more info let me know.
 

floof0

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I haven't, but how would I do that, and would it make a difference as the pc doesnt boot after turning it off again?
 


Well, so my thought is that something is forcing your bios to adopt different settings, settings that won't let you boot. so when you pull CMOS, it sets those settings back to default, and let's you boot, but then that thing makes the change again, and so the cycle goes.

So in bios, at the bottom of the screen there should be instructions for like 'press F9 to ...', it might be there. If not, your bios should have a tab to save settings and exit, exit without saving, etc. In there might be an option for setting everything back to fail safe defaults.

If you post pictures of your bios, I might be able to direct you there. Of course, this is all just a hunch, it may not work at al, but it couldn't hurt
 

floof0

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Jun 2, 2017
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The options I have are: Discard Changes and Reboot, Save Changes and Reboot, Save Changes, Discard Changes and Restore Defaults. As for F# keys there is F6 that loads optimized defaults (Tried that it didnt work) and F10 which is Save and Reset.
 


try the 'discard changes and restore defaults'

Other than that, I would just try running malwarebytes once you get it up and running.

If those don't work, I'm out of ideas
 

floof0

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Jun 2, 2017
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Well uh, now for some reason my PC wont even turn on, so I hope I haven't somehow killed my pc. ... damn
 
nah, we didn't do anything that could have bricked it, unless for some reason your defaults are like 5.6MHz at 2.2v or something, but you'd smell that.

try doing a full power cycle (flick the switch on PSU or unplug it), and if that doesn't work, reset CMOS again.
 

floof0

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Jun 2, 2017
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Nope still nothing, and I didnt load defaults, when I got into the BIOS I just exited and rebooted, nothing else as I was going to try the load defaults next time.
 


Maybe your Mobo was on its way out the whole time. do you have a replacement that you can try?
 

floof0

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Jun 2, 2017
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Yeah maybe, and unfortunately no I don't
 

floof0

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Jun 2, 2017
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Ah alright, thanks for letting me know
 

floof0

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Jun 2, 2017
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No I can't as it's used, but I guess I'll get into buying a new board. Thanks for all your help!
 


well, just because it can't be used doesn't mean it can't be RMA'd. I would check with the manufacturer, because there's a chance you could save money there. go with what you feel though :D
 
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