Question about Dell Alienware X51 Desktop PC | Core i7 | 8GB & 1TB

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Alienware x51 random restarts [solved: Dell had the audacity to supply the need with an underpowered PSU for the GPU they offered]

My x51 seems to suffer from random restarts. Sometimes before a random restarts happens the fans would go on overdrive and then 2 seconds later crashes and restarts. No BIOS error, restart as per normal. I then further realized that these restarts don't happen under intense gaming or some sort, but during youtubes and playing audio/video streams from the internet. This is all I managed to dig up. Anyone know what's causing this and solutions?

Posted by Wiryan Tirtarahardja on

  • florida Wilson
    florida Wilson Sep 13, 2018

    I am using Dell Alienware gaming laptop from last two year and recently I watched a movie and my laptop whether it is just sitting idle, if I'm watching a video, playing a game etc. It will just randomly restart. At first, the screen goes black and at the same time, it sounds like the fan goes crazy. then I went through and they helped me a lot to resolve my all issues.



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Cato Pedersen

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Hello Wiryan =)
Sounds like either a power supply or graphics card issue to me. You could try downloading Almico's speedfan to check your temperatures just to be sure that they are fine.
You should contact Dell, they can probably troubleshoot the issue pretty fast/send a technician to you. The X51 randomly shutting down is a common issue if you check the forums over there.
I assume you have updated every driver to the latest?
Hope this helps! :)

Posted on Aug 07, 2013

Testimonial: "So I ran some tests as well, A) its not an overheating issue, since the GPU is operating under the maximum ceiling temperature. B) drivers are up to date. C) tried changing the nvidia settings, made it worse so i sticked to defaults And i've been looking around forums and such and nobody seems to have a definite answer, now that overheating is ruled out I guess."


Larry Ng

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Florida Wilson

You nor the OP ever told that X51 you own,
X51,xxxxxxxxxxxxxxxxx what is the x numbers.

that PC power needs vary alot. ( seen vast posts all doing it wrong)
it's called a power budget if you take a class in electronics.
Power is a day1 learning event. do so.
huge variances POSSIBLE on topic POWER.
from 300w, to even as high as 1000watts.
(more if running Bitcoin BS systems.) i digress.

The PSU must run the mobo neat, (has spec)
then if not running SSD but running 3 HHD 3TB each it needs more power.
them that endless chain of GPU cards., (vast cards exist no 2 the same)
examples real, and expected all by me,,, before the changes.

my GTX1050 uses near no power, at all 75watts max, 60w par gaming , but way less power not gaming (a real good BUY)
60FPS on Farcry 5. (new)
but PSU must handle peak watts total, or it fails !!!!!!!!

my old 650 GTX burned huge power , and made huge heat)

(as its book warns you if you read it it says 30 amps on the 12vdc rail or it will FAIL !!!! )
360watts all by its self, it blasts hot air into my room. no room heater needed in my den. LOL

so 360 + 330 is what. 690watts just for 2 things. (800w psu buy it)

my gtx650 is now retired, and in an attic box,
learn to not lay blame on others, when you build a pc.
or update a PC, (that is under YOUR STEAM) ok?

many are clueless what power even is ? (P = V x I (amps)
The PSU must regulate power and not overload.
if you over load it the PC will crash, or turn its self off)

ERROR 2 is if your GPU card has the 8 pin AUX power cable. and is not connected the GPU will crash. (fail for sure)
my 1050 has no such jack, it uses tiny currents and screams fast.
buy a new GPU.

tell me what is in that box of yours, all parts (parts MATTER)

  • mobo name and model
  • GPU (cards, PCI-express) name and model. be exact here.
  • HDD and not all SSD. and how many if HDD? drives.?
  • what PSU.? watts, rated????? 300/500/800? less is crazy
and we can talk , now if these facts are conveyed to me.
easy,,. it's just POWER (volts times amps)
Then comes, (cooling)

if it is not a power issue, then update your GPU card drivers.

"no one, has and answer"
I hate to break the news to you but computers are not toasters.
well gee you are in text box. with no facts posted. at all
zero inputs. just vague systems mentioned
"fans go overdrive", well gee it sees it overheat and tries hard to end it and can not. bit, the case has no case fans.????

no GPU stated, some have there own exhaust port to the rear.
(better this is)
but in all cases.....
others do not, all GPU needs cool source of air inside the case
if not the GPU/CPU will overheat. the cure for that is fans. in the case for sure the front, and the room you are is coo, not 120f rooms.
ok, we run 77f here all summer deep south..
no problem with even the hottest running GPU made, here.
but we have nice huge case fans.
next is this (we use a temperature probe inside the case to see truth, we see 80F max)
"its not an overheating issue, since the GPU is operating under the maximum ceiling temperature. " why not say what that is???????
Facts are 90c is max for most processors. 50 to 60c is normal
mine is 39C now as I type, (pro grade system hand made by me)
'never 90c even your CPU will self shut off at 90c for the same reasons.
GPU's crash for 3 top reasons
1: tiny PSU with no consideration for power budget.(or cables missing)
2: wrong software driver , or corrupted OS!
3: overeheating the GPU. learn to get a free app, and log those temps to file and read the file after it crashes, omg 90c:????
op never once stated full model. #
Alienware 51 AX51-5725BK came with
NVIDIA GeForce GT 640 x16 HDMI (no brand stated it's not DELL)

if that is missing or changed , that is your problem. you change.= your job on your STEAM.

or this

Dell Alienware X51 R3 i5 6400 Quad 2.7GHz 16GB DDR4 3.24TB SSD GTX 970 4GB GDDR5

as you can see X51 don't mean squat !

if you upgrade ANY PC not just DELL or X51
upgrade the GPU card,
first ask how, my guess is you skipped asking a real tech, how first.

it's like saying I drive a chevy
and forgetting to say Corvette, and HO engine size.
see what is in the box is what matters, first.
good day and good look doing upgrades blind.

Posted on Sep 13, 2018

  • Anonymous Sep 13, 2018

    Florida Wilson hyjacks an laptop over,desktop x51, why do that.

    but i guess you laptops overheats
    so load and run the whats my PC temperatures
    run that. and learn to:
    2: and never it on a blanket (or any thing that blocks vents)

    ask or google for that app program.

    HW_monitor. ( I use this)



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SOURCE: 8mb of video on my pc and youtube and any other

The display of video is not dependent on the video ram, but on the connection to the internet. Dialup just wont work, as the feed is too slow.

Posted on Sep 29, 2009


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SOURCE: Computer crashes and vista says it is NVIDA Geforce

If I were you I'd wait for the next driver update. ALso, you could try sending Nvidia a complaint about this, so they know they've got to fix it.

I hope this helps,

Posted on May 29, 2009

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