PC turns on for 5 minutes then shuts off

[Akamai]

Hi, my PC turns on for 5-10minutes, shut off then repeat. Already tried the following, still no luck.
*Downgrade BIOS version
*Boot using only a stick of RAM
*Replace CMOS battery
*Clear CMOS settings
*Reseat cables
I'm suspecting that the PSU or the motherboard has problem. Any ideas? Thanks.

i5 3470
Biostar H61MLV
12gb RAM
Seasonic M12ii EVO 620w

[Omega]

Make sure no components are overheating.

After that I would suspect the PSU. But the only way to be sure it is indeed the issue is to swap it with another one.

[Akamai]

Yes, no components are overheating. Already replaced thermal paste. POST messages tells "CMOS Fail". Does that hint that the motherboard is faulty?

[Sapph]

Αναρτήθηκε αρχικά από aldreezee:

Yes, no components are overheating. Already replaced thermal paste. POST messages tells "CMOS Fail". Does that hint that the motherboard is faulty?

THe CMOS battery might be dead.
Go buy a new CR3032 battery and replace the old one.

EDIT: you seem to have done that already. So motherboard probably is just dead.

[Bad 💀 Motha]

Set BIOS to:
Power Off State = Stay Off

Yes first thing to try here is a different PSU

For now, unhook all Drives, power and data.
Test with new PSU and then go into the BIOS and let it sit there and see if it shuts off or reboots. If it happens within an OS, it could be anything, like the OS corrupted, faulty ram, faulty local disk drive; you name it.

[Akamai]

Already replaced it and restored to defaults.

[chiefputsilao✖️ping]

in my own experience, CMOS problem = dead battery,

get a replacment CR2032 battery, costs less than a dollar equivalent in the philippines (about 45php for energizer, and about 35php for maxell)

[Bad 💀 Motha]

Αναρτήθηκε αρχικά από Sapph:

Αναρτήθηκε αρχικά από aldreezee:

Yes, no components are overheating. Already replaced thermal paste. POST messages tells "CMOS Fail". Does that hint that the motherboard is faulty?

THe CMOS battery might be dead.
Go buy a new CR3032 battery and replace the old one.

No; system either boots or it doesn't. It doesn't do what the OP is describing when its CMOS Battery. Plus on those systems, they are not new enough, when CMOS Battery is an issue on those systems, the BIOS just boots with default settings is all. Newer motherboard however will be dead-locked to not boot at all if CMOS Battery is dead or low voltage.

[Akamai]

Some cases, I had to wait for 10-15minutes before turning it on after it shuts off. It's just dead/no response within the waiting time.

[Bad 💀 Motha]

New Power Supply >>> TRY THAT

[Viper]

Could be you CMOS just has bad settings. Load the default or optimizesd settings into the BIOS. Could also be that the BIOS is corrupt. You could try reflashing it with the proper data from the motherboards website. And it could be a bad motherboard.

also try clearing your BIOS by unplugging the power cord, move the jumper cap of CLEAR CMOS header ( might be labeled JCMOS ) from pins 1-2 to 2-3 and leave it there for 5 seconds. Move the jumper cap back to pins 1-2. Plug in the power cord, turn it on.

[Bad 💀 Motha]

Loading Defaults is the same as clearing CMOS; do one or the other; no need to do both.
If the Mobo posts ok; the enter bios, load optimized defaults, save & exit

[Akamai]

I don't have a backup PSU atm. I tried to test the PSU by shorting the 3rd and 4th pin for it to turn on without the motherboard and it worked. Does that prove that the PSU doesn't have problem?

[Omega]

Shorting the green and a black wire only proves that the PSU is still able to turn on. It might have serious issues when under load.

[Bad 💀 Motha]

Αναρτήθηκε αρχικά από Omega:

Shorting the green and a black wire only proves that the PSU is still able to turn on. It might have serious issues when under load.

^ This; it proves nothing. It's not a real PSU test. It just proves it's able to turn on and stay on. But again there is no load occurring so you can't be sure from this test how stable the PSU and its Rails are, when actually under various loads.

Best bet is get a friend to help who has parts, or take the whole PC tower to a shop and have them try a different PSU.

[changeable_fate]

Sounds like a Harware, or possibly a heat problem.

You have booted up on one stick alone so I assume you're swapping over memory sticks and the problem still remains so in all probability it's not the memory.
Try and beg, steal or borrow a PSU and eliminate that as being your problem. I wouldn't buy another PSU in the event that's not the issue.

Are all the fans running OK, and are they clean-ish?
Try entering the BOIS and making sure the fans are all spinning at the correct speed.
There are a number of free utilities which will monitor heat levels for you too.

Try also disconnecting your front panel connectors and check it isn't just a short.

Hope you get it sorted.