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PC reboots after 20 secsonds, then stuck on bios screen

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  • BIOS
  • Systems
Last response: in Systems
June 9, 2014 2:24:30 AM

how do i fix this, my pc monitor started going on and off as if it lost the signal, then it suddenly started turning itself off. The other day i got the blue screen saying "system thread exception not handled (atihd86)"

I assume its a faulty driver but now the pc reboots after 30 secs and i haven't even got the time to get it in safe mode.

Please help

More about : reboots secsonds stuck bios screen

June 9, 2014 2:27:21 AM

post your build.

What temps are you getting eg cpu?
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June 9, 2014 2:38:24 AM

a little rusty on the specs but heres what i can remember

Asus m587L motherboard
AMD FX+ 8 core processor (not sure which model)
16gb corsair vengence ram
120gb ssd + 2tb hdd
520w switching psu
2gb graphics card (vtx 3d)

forgot to say i don't know temps as its now not on long enough to find out.
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June 9, 2014 2:48:37 AM

Did you overclock the cpu?

Clean out the cpu cooler and increase its fan speed.

do a bios or cmos reset - google it.

Have you made any changes lately?
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June 9, 2014 2:57:36 AM

I wouldn't know how to overclock it,

I haven't made any changes apart from adding a 32" tv on a dvi cable from the graphics card. I had this setup berfore but recently i moved house and bought a longer cable - wouldn't have thought a cable change would do this Only thing that springs to mind is my hard drive failed and the pc won't start with it connected. So i dis-connected it and it runs/ran fine

I'll do what you suggested and get back to you.
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June 9, 2014 3:11:22 AM

TO Jaraldo,

i did get the screen of death but only after taking out the graphics card and trying to use the onboard graphics to try eliminate the problem. but now i don't get the blue screen with either graphics options. The pc turns on, starts up. I can log in and get 15 seconds of use before it restarts. Then it gets stuck on the first screen (press f8 screen) where i have to manually reset it.

I don't have the boot disk as you right it was pre-built and didn't some with one. I did manage to get to the startup repair screen but it reset itself before i could do anything.

I was wondering if it was hot!
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June 9, 2014 3:15:23 AM

update:

managed to get into bios screen and pc is still on after 5 minutes,

Processor is AMD FX(tm) 8350 8 core
MB is Asus M5a78L -m/usb3

Occasionally the screen goes blank and then comes on after 2 seconds, but its still on
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June 9, 2014 3:17:39 AM

Is this after a bios reset? or before?

Can you increase cpu fan speed?
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June 9, 2014 3:34:19 AM

i7baby, haven't done reset yet.

how would i increase fan seped in bios
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June 9, 2014 3:38:23 AM

Read your mobo manual.
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June 9, 2014 3:44:41 AM

Here is your manual
http://www.manualowl.com/m/Asus/M5A78L-M-USB3/Manual/26...

If you could list your PSU aswell, just so you have some more info as it is more than likely a junk one. You will actually have to look for a model numer or something on the PSU itself.

But do what i7baby says first as trying to get your system cooler is the priority.
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June 9, 2014 3:46:49 AM

i have increased fan speed to "turbo" @ 3200rpm

temps are CPU 61'c & MB 38'c
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June 9, 2014 3:49:32 AM

Gees. You gotta clean out the cooler and probably reseat it - remove it, remove the thermal paste with isoprpyl alcohol, put on a pea size drop of Arctic Silver paste then put the cooler back.
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June 9, 2014 3:49:48 AM

PSU is ATRIX 520u 12v
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June 9, 2014 3:54:54 AM

i'll get that done, do a bios reset and get back to you all,

thanks
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June 9, 2014 3:59:00 AM

basically i've got the worst psu available,
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June 9, 2014 4:23:38 AM

another update,

i reset the bios, undated date, boot order etc.

pc started to load then screen went blank, another screen appeared with loads of writing on it. stuff like
usb device(s): 1 keyboard
auto-detecting sata3g_1...ide hard disk

then at the bottom of the page it says

"power supply surges detected during the previous power on, asus anti-surge was triggered to protect from unstable psu"

f1 to run setup
f2 to load default values and continue

I tried F1 and it took me to bios, so i tried f2 and now its trying an auto repair

did this for 20 secs and loaded the page mentioned above with the f1 & f2 options.

Is it looking like my rubbish psu is causing this
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Best solution

June 9, 2014 4:27:20 AM

Well, I don't know about you, but for me that's a good sign lol.

Far easier to go get a new PSU than it being some bios problem or drivers that could take days of research to fix :p 

My first CX600 PSU did the same thing to my build with the built in anti surge, I got a new Seasonic PSU and 3.5 years going strong still :) 

I'm sure the poor ARTIX couldn't handle the 8320 and the r9 270 very well and eventually lead to this...One thing I hope is that your mobo is alright. :S

Just so you know, this is a common problem with all prebuilt computers, all terrible motherboards and powersupplies... >:$
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June 9, 2014 4:27:23 AM

ive got another psu here, its probably rubbish aswell but i'll try it anyway
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June 9, 2014 4:31:53 AM

it says walmart. lol
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June 9, 2014 4:38:13 AM

Sheesh - you gotta sort out your shopping lol
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June 9, 2014 4:39:37 AM

Oh lordy loo lmao, Throw it in the trash! :lol: 

It'd be interesting to know if any prebuilt machine ever had a half decent PSU in it... o_O
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June 9, 2014 4:43:17 AM

thanks i7baby,

well my 2nd non discript psu is in and my pc did some repairs and now its on.

Still going strong after 5 minutes (record for the last day)

Thanks for all your help i7baby & Jaraldo, i promise i'll get a decent psu.

thanks

Jason

(i looked up the 2nd psu and its not even on the list)
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June 9, 2014 4:48:36 AM

Well, just my advice, don't try any gaming until you get the new PSU. Or else you might be back here again too soon!

Have a good one :) 
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June 9, 2014 4:49:23 AM

When iy settles down, download and run HWInfo - Sensors and check out 12v,5v and 3.3v for psu, and Vcore and gpu voltage plus temps and fans speeds to make sure everything is 100%
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