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Blank Screen After A While


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#1 fleamour

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Posted 09 August 2010 - 02:28 PM

I was given a PC by somebody to fix up. The original graphics card returned an out of range error, this resolution is not supported. It would do this regardless of monitor.

I have tried two more cheapo eBay 2nd hand graphics cards, both exhibit the same behaviour. The PC will boot fine but then when leaving it for a while, upon returning the screen will be blank & no wiggling of the mouse or tapping the keyboard will bring it round. The only thing to do is reboot.

I'm guessing this PC is overdue a trip to the dump, Toy Story III stylee.

What do you reckon? Could go for a solder reflowing bake in the oven I guess? If only I could find that Micro Mart article...


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#2 Broni

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Posted 09 August 2010 - 10:04 PM

Had a chance to look inside the case, how dirty is it there?

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#3 fleamour

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Posted 10 August 2010 - 09:08 AM

It looks fairly clean, I air dusted everything a while back.
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Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#4 Broni

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Posted 10 August 2010 - 08:09 PM

Download, and install SpeedFan: http://www.almico.com/sfdownload.php
Post your computer temperatures:

Posted Image

Provide processor info (hold Windows logo key, and hit Pause/Break key to find out).

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#5 fleamour

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Posted 11 August 2010 - 12:30 PM

AMD Athlon XP 3000+ 2.09GHz. Temps to follow.
ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#6 fleamour

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Posted 11 August 2010 - 12:40 PM

You may be on to something, the noisy HDD was going crazy doing it's thing when all of a sudden screen went blank &, silence.

Should I check CPU fan? Surely BIOS will only POST if fan OK? Maybe if I clean down & apply some MX-1 compound I still got knocking about?
ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#7 fleamour

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Posted 11 August 2010 - 12:49 PM

Can I safely use acetone/nail polish remover insteada white spirit to clean up CPU mating surfaces before applying a new layer of thermal compound?

EDIT: A quick Google later & yeh it is fine, but I'd use white spirit wherever possible as IMO acetone does not cut the mustard. (Acetone can oxidise certain plastics, if that is the correct term.)

Edited by fleamour, 11 August 2010 - 05:33 PM.

ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#8 fleamour

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Posted 11 August 2010 - 04:14 PM

@Broni

Cheerz!!! That stops me from throwing out a perfectly serviceable unit, some new CPU compound & she's not overheating any more.



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ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#9 fleamour

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Posted 11 August 2010 - 04:51 PM

Bummer!!!

I've only suspended the inevitable, takes a longer amount of time but still goes down with same symptoms. What should I try next? The case is very shallow (SFF) so will not take a decent after market heat sink, only the clip on affair, which I doubt bonds very efficiently.

Help!

EDIT: Outages seem to be random, so that would seem to rule out overheating? Have reapplied CPU thermal compound more sparingly. I am thinking this is definitely a hard error, just to make sure I am running a live Linux CD, but do not hold out much hope. I am loathe to throw away but it could be the mobo or PSU, no point spending more money.

Edited by fleamour, 11 August 2010 - 05:32 PM.

ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#10 fleamour

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Posted 11 August 2010 - 07:38 PM

Temp III will jump from 30c straight up to 51c in one big leap then down again. This suggests something is amiss or not making contact very well. No idea what though...

Edited by fleamour, 12 August 2010 - 02:07 PM.

ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#11 Broni

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Posted 11 August 2010 - 11:19 PM

I'd like to see temps from "Readings" tab.

Temp III will jump from 30c straight up to 51c in one big leap then down again

Something not right there.

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#12 fleamour

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Posted 12 August 2010 - 02:09 PM

Here we go, pretty soon after boot, jumps all over the place, though HDD always runs hot.

Edited by fleamour, 13 August 2010 - 10:19 AM.

ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#13 Broni

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Posted 12 August 2010 - 07:41 PM

SpeedFan number are no clear to me...

Download, and install Everest Ultimate Edition 4.6: http://downloads.guru3d.com/Everest-Ultima...nload-2298.html
Enter following registration code (Help>Enter product key) to make it fully functional:
RHGJE-54X47-HML9C-V498I-UUMVI
(it's all legal, the above version has been recently offered as a free download)
Expand Computer folder.
Click on Sensor.
Post all info from there.

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#14 fleamour

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Posted 13 August 2010 - 10:21 AM

Well according to Everest the CPU temp jumps around from anything as low as 14c up to 72c?

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ASRock Conroe (micro ATX) - Ubuntu 12.04/Win 7 Ultimate (x86)
Intel C2D E8400 3.0GHz/low profile Noctua (single fan)
4GB OCZ DDR2 RAM, GeForce GT220 1024MB

Vintage IBM-T21 laptop, Xubuntu Lucid LTS
512MB KingSpec RAM, 1GHz CPU [T22 Fan], Wireless-G PCMCIA, 7200RPM HDD

#15 Broni

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Posted 13 August 2010 - 12:21 PM

Well, 72C would be extremely high.
Something is wring there.
Maybe fans are not working all the time.
You may also need to reapply thermal paste.

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