Forum Thread

Random computer shutting down - even on bootup

Lark 3,220 593 November 15, 2015 at 03:28 AM
Sometimes my computer runs an entire day, other times it can abruptly shut down. Not only does it just shut down, but reboots.

It would even shut down abruptly on boot up before BIOS too. Could this mean it is a faulty PSU not supplying consistent power?

I have ran a stress RAM and CPU test and both seem to be fine.

The temperatures seem normal and it's very cold in the room.

I feel it's a bad power supply, but does anyone else have any theories?

31 Comments

1 2 3

Sign up for a Slickdeals account to remove this ad.

Joined Jul 2005
Toadally Irrelephant
7,613 Posts
1,199 Reputation
#2
Does it actually go through the complete shutdown procedure, or does it simply die and restart? If it's going through the shutdown procedure, you probably have a loose power switch/connection on the front panel, or where this switch connects to the motherboard. If it's dying and then restarting it's more likely the motherboard and/or memory and/or disk.
Reply Helpful Comment? 0 0
Quote from serra View Post :
stoopid serra.
Quote from slickdeals View Post :
How did I end up here...
Joined Nov 2005
Best Avatar Award
3,220 Posts
593 Reputation
Original Poster
#3
Quote from VorlonFrog View Post :
Does it actually go through the complete shutdown procedure, or does it simply die and restart? If it's going through the shutdown procedure, you probably have a loose power switch/connection on the front panel, or where this switch connects to the motherboard. If it's dying and then restarting it's more likely the motherboard and/or memory and/or disk.

Not shutdown procedure... it shuts down abruptly like you're pulling the power plug, but tries to start back up again... sometimes it boots up fine... other times struggles to even get through BIOS and shuts down abruptly there too... You don't think it could be the power supply? It's odd that it's running fine right now... it's really inconsistent.
Reply Helpful Comment? 0 0
DON'T WATCH THIS IF YOU'RE HAPPY LIVING A LIE. [youtube.com]
Watch "Wag the Dog [imdb.com]"

9/11 was an inside job. Mad
Nazi's Reichstag fire + 9/11.
Enabling Act 1933 + Patriot Act 2001.
Bush = Hitler.
#4
Quote from Lark View Post :
Sometimes my computer runs an entire day, other times it can abruptly shut down. Not only does it just shut down, but reboots.

It would even shut down abruptly on boot up before BIOS too. Could this mean it is a faulty PSU not supplying consistent power?

I have ran a stress RAM and CPU test and both seem to be fine.

The temperatures seem normal and it's very cold in the room.

I feel it's a bad power supply, but does anyone else have any theories?
wow, I was coming here to ask the exact same question! I'm also thinking its a bad power supply. My pc just started doing this two nights ago. The first night it happened right before going to bed so when it rebooted I just shutdown and hoped it was a one time thing. Last night, also right before bed, it shutdown/rebooted and then within 15 min it did the same thing. The process kept repeating a few more times, each time with fewer minutes between shutdowns.

Today I opened up the system and everything is connected fine. I dont know what else I can check other than PSU and video card.

Is it possible we both got a windows update our systems dont like? Or a virus?
Reply Helpful Comment? 0 0
Joined Nov 2005
Best Avatar Award
3,220 Posts
593 Reputation
Original Poster
#5
Quote from cardboardbox View Post :
wow, I was coming here to ask the exact same question! I'm also thinking its a bad power supply. My pc just started doing this two nights ago. The first night it happened right before going to bed so when it rebooted I just shutdown and hoped it was a one time thing. Last night, also right before bed, it shutdown/rebooted and then within 15 min it did the same thing. The process kept repeating a few more times, each time with fewer minutes between shutdowns.

Today I opened up the system and everything is connected fine. I dont know what else I can check other than PSU and video card.

Is it possible we both got a windows update our systems dont like? Or a virus?
I don't think I had any windows update...

So far it is running fine for me... but I think this is just luck...

Even though my RAM should be running at 9-9-9-24... my BIOS auto sets them to 11-11-11-28... When I set it to load the XMP profile, it will run as 9-9-9-24, but I'm wondering that's causing the sudden shutdowns... I reset it in bios, running at 11-11-11-28, and I'm not getting the shutdown, which doesn't make sense either way...

It's so difficult to tell... I was narrowing it down to RAM or PSU...

If your video card is failing, I don't think that would shut down the PC... wouldn't it just not display anything but the computer keep running?

Ah troubleshooting computers... vomit


I'm actually running 4 monitors on one graphics card.... and one monitor that is connected via its DisplayPort, I'm using a DisplayPort to HDMI adapter and I thought the adapter was failing on me, but it's running fine right now... That's why I'm thinking it's the PSU not being able to supply enough power or something is being flaky at times...
Reply Helpful Comment? 0 0
Last edited by Lark November 15, 2015 at 12:23 PM
#6
Assuming it is not heat related, I would guess a memory problem in that you may be using ram too slow for your machine (you need to verify the specs) and that causes an issue at times.

Or it could be a driver problem of some sorts (most likely the video). Verify you have the latest driver(s) from the manufacturer installed.

Or your PC is drawing too much power for your PSU to handle. If your video board draws a lot of power to drive the multiple displays, then that is likely the major power hog in the system. You would need to verify the specs of your PSU and video card and anything else connected.
Reply Helpful Comment? 0 0
#7
Quote from Lark View Post :
I don't think I had any windows update...

So far it is running fine for me... but I think this is just luck...

Even though my RAM should be running at 9-9-9-24... my BIOS auto sets them to 11-11-11-28... When I set it to load the XMP profile, it will run as 9-9-9-24, but I'm wondering that's causing the sudden shutdowns... I reset it in bios, running at 11-11-11-28, and I'm not getting the shutdown, which doesn't make sense either way...

It's so difficult to tell... I was narrowing it down to RAM or PSU...

If your video card is failing, I don't think that would shut down the PC... wouldn't it just not display anything but the computer keep running?

Ah troubleshooting computers... vomit


I'm actually running 4 monitors on one graphics card.... and one monitor that is connected via its DisplayPort, I'm using a DisplayPort to HDMI adapter and I thought the adapter was failing on me, but it's running fine right now... That's why I'm thinking it's the PSU not being able to supply enough power or something is being flaky at times...
When troubleshooting, I've found that the solution often isn't even on the initial list of ideas. So while the video card is unlikely to be the cause of the problem, you never know for sure. Smilie

So far I'm ok today. I have 2 hard drives unplugged. I also unplugged a DVI cable that was going to nothing as I'm using display port. But both times the shutdown happened to me late at night so I'm still waiting for it. I did shutdown my pc this afternoon for a few hours, thinking maybe that would help. Probably going to look for a new PSU next week just in case. Never hurts to have a backup on hand.

About your ram... If you didnt change any of the settings recently, I wouldnt think your ram would just suddenly go bad and cause the shutdowns.
Reply Helpful Comment? 0 0
#8
Is this a home build or is this a name brand PC?
If it's a name band there are usually diagnostic build into the system and they are effective.
If you are trying to determine if the memory is question then nothing is better then :
http://www.memtest86.com/
To eliminate the OS just boot off a Linux CD allow the machine to run and if it does not reboot then you it will help further.
Reply Helpful Comment? 0 0

Sign up for a Slickdeals account to remove this ad.

#10
Quote from xxxHolic View Post :
The problem is from motherboard.
I second this. Bad news but MOBO is what it sounds like.
Reply Helpful Comment? 0 0
#11
OP, I agree with motherboard or power supply being an strong possibility, but it can also be your hard drive. If there are sectors that it can't read (sometimes), it may trip over them. And if it's the boot block, it'd get stuck on the bios while the drive retries.

Simple way to test this: Make a bootable USB and unplug the hard drive. Use the computer from the USB for a bit, see if the issue persists. If it does, you've ruled out hard drive.
Quote from laurenralph View Post :
Sorry if you feel that i am spamming , Actually sometime C drive going harsh due to temporary files or bad files which is come from the internet that's why i used this word try to clean your PC by C cleaner , disk clean up .
how the hell can registry impact it not booting past BIOS?
Reply Helpful Comment? 0 0
#12
Quote from Lark View Post :

Even though my RAM should be running at 9-9-9-24... my BIOS auto sets them to 11-11-11-28... When I set it to load the XMP profile, it will run as 9-9-9-24, but I'm wondering that's causing the sudden shutdowns... I reset it in bios, running at 11-11-11-28, and I'm not getting the shutdown, which doesn't make sense either way...

Check and make sure the voltage is correct on the ram.
Reply Helpful Comment? 0 0
#13
Coming from experience. It is your power supply. You are definitely correct!

What is your Graphic card? How much power does your PSU have?

It is most likely your PSU especially you buy a power supply that is not from a popular brand. If it is your power supply, couple more tries you will smell smoke.

Do you know what trigger the crash? Photoshop? Game? and others?
Try to max out your graphics, that should trigger another shut down.

----
CPU voltage max out around 140W or below depending how old your CPU is
memory is even less than that.
Graphic card can max out around 300W or more.
Reply Helpful Comment? 0 0
Last edited by xxtanisxx November 16, 2015 at 01:17 PM
#14
What I would do, turn the PC off, take the cover off and give it a good compressed air dusting and see if that make any difference before replacing the power supply
Reply Helpful Comment? 0 0
#15
click the start button.
type reliability history in the start window.
Read the report and from that you can trace your problem.
Have fun hug
Reply Helpful Comment? 0 0
Earth 1st! We'll mine the other planets later. Biker

Did you know?

If it can't be grown its gotta be mined
EEK!

The best meal I ever ate was Spotted Owl fried in Exxon Oil! Yumshake head

Expand your horizons. Explore something new. Get a RasberryPi and learn something.
Page 1 of 3
1 2 3
Join the Conversation
Add a Comment
 
Copyright 1999 - 2016. Slickdeals, LLC. All Rights Reserved. Copyright / Infringement Policy  •  Privacy Policy  •  Terms of Service  •  Acceptable Use Policy (Rules)  •  Interest-Based Ads
Link Copied to Clipboard