Question about HP Compaq dc5100 PC Desktop

2 Answers

Computers shut down randomly while students are working on them. Red light blinks on the front of the CPU. The computers have Deep Freeze and Synchron Eyes on them as well.

System info from one machine:
OS Name Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 2 Build 2600
OS Manufacturer Microsoft Corporation
System Name CCHS-G106-01-S
System Manufacturer Hewlett-Packard
System Model HP Compaq dc5100 MT(PZ597UA)
System Type X86-based PC
Processor x86 Family 15 Model 4 Stepping 3 GenuineIntel ~2992 Mhz
Processor x86 Family 15 Model 4 Stepping 3 GenuineIntel ~2992 Mhz
BIOS Version/Date Hewlett-Packard 786C2 v01.07, 8/25/2005
SMBIOS Version 2.3
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"
User Name Not Available
Time Zone Central Standard Time
Total Physical Memory 512.50 MB
Available Physical Memory 237.79 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 1.20 GB
Page File C:\pagefile.sys

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers
Re: Computers shut down randomly while students are...

Open the PC box. Check the CPU heatsink/fan for dust clogs. After that is cleaned, put a little fan blowing onto the mobo. An over heating processor acts just like this. If the BIOS were changed try to scale back a little, first. Just see if the venting solves its prob. Wont cost you anything, and it wont hurt....

Posted on Oct 08, 2012

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 121 Answers
Re: Computers shut down randomly while students are...

Check for previously installed skeduled softwares.

Posted on Nov 14, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

This Desktop makes beeping sounds with RED blinking lights, then shuts down

Sounds like an overheating issue. Try letting your computer cool down for a few hours and try again, if it continues you may need a new CPU

Aug 04, 2013 | HP Compaq d530 PC Desktop

2 Answers

Cannot uninstall deep freeze

uninstall it using administrator password

May 10, 2011 | PC Desktops

2 Answers

Emachines ET1810 desktop computer randomly powers down for seemingly no reason. Doesn't crash or freeze, just turns off, as if the plug was pulled. Started about 5-6 months after buying.

It could be overheating, and automatically shutting itself down, to avoid any damage.

Did you get the standard 12 month warranty when you purchased the computer? Did you purchase "extended" warranty? If so, contact Emachines, and get them to trouble-shoot and fix it.

Jun 11, 2010 | eMachines ET1810-01 PC Desktop

1 Answer

2 light is lit on front of cpu

That's not a problem. One light(Green one) is for power and another (Red one) is for Hard Disk. Red one will blink continuously, if hard disk is being accessed.

May 20, 2010 | Dell Optiplex 740 Desktop Desktop Computer...

1 Answer

The computer will just randomly do a windows shutdown and then restart. Cleaned, changed the power supply and still does it.

Computers may not be smarter than people, but if they’re designed properly, they will shut themselves down before overheating to the extent that they do themselves damage. If the smart person keeps turning the computer back on and figures out a way to foil the protection, the unit is probably doomed. Once a unit shuts down for thermal event protection, it may refuse to power back up for a fixed period of time, five or ten minutes, or it may begin to boot and shut down immediately as soon as it boots to the point that it can figure out that its too hot. The over-temperature protection is generally a BIOS rather than an operating system function, so one sign of an overheated unit is one that shuts itself down while you’re using it and then refuses to boot as far as the operating system unless you leave it alone for an hour or so to cool down. Unless you’ve been working in a very unfriendly environment, high temperatures, direct sunlight, etc, you should take even a single overheating shutdown as a warning to back up your data at the first opportunity and to give the cooling system a serious cleaning. Check the CPU fan if it is spinning and also the CPU itself put thermal paste. So that the heat from CPU will absorbed by the heat sink.

Jan 19, 2010 | Dell Dimension 2400 PC Desktop

2 Answers

Dell 5150c shuts down orange flashing light

As a temporary measure, taking the side panel off the dell 5150c stopped it from shutting down, so in my case it was clearly a heat problem, as suggested by previous the poster. The following instructions assume you're comfortable replacing computer hardware components - do at your own risk!

The solution is to buy an 'air duster' and some thermal compound for the CPU heat sink. If your CPU fan doesn't sound healthy (mine didn't), also buy a new one (ca. £20 on ebay: search for G9474 ).

Read the service manual: for details on how to install / remove the fan and heat sink.

Clean out dust from the heat sink with air duster. Remove the fan, and clean or replace (recommended). Also clean the grill in front of the fan. Clean off old thermal compound from the CPU / heat sink and replace with a thin layer of fresh compound. Replace heat sink and side panel and you're done.

Mar 16, 2009 | Dell Dimension 5150C (DIM515CMIN) PC...

1 Answer

Emachine t5026 not power on. replaced psu.

I would test the memory. Also I think some computers will shut down if the fan on top of the CPU quits working. Or maybe one of the other fans or the Hard Drive quit and is drawing too much juice causing the PSU to shut down. It sounds like something may be grounding.

Jan 02, 2009 | E-Machines T2642 PC Desktop

2 Answers

Blinking red lights on startup

4x red blinking light on this system means it's "CPU thermal shutdown" this is done when the cpu fan fails to cool the cpu and the computer shuts itself down to keep you from burning up the system.
This could be caused by dirt, hair, dust in the cpu fan or heatsinc or because the fan has failed.
you can blow some canned (dry) air through the fan and heatsinc undernieth it and try to clean it. most likely you will have to take it off to clean it thoroughly or replace the fan. It is about a 15-20 dollar fan and your local computer shot or neighborhood computer guru can replace it in 10 minutes, so dont let then keep your computer longer than a day.
If your computer savy, remove the case, inspect the fan while the computers ON to see if it sounds weird or is not coming on at all. it has usually two retaing clicps the can be difficult to remove with the power supply in the way. so be ready with a philips head screwdriver and a notebook to write down anything you dont want to forget to put back. If you decide to tackle it, post again here after you check the above mentioned things and ill get you a detailed breakdown of how to do it. It real is not too hard.

Oct 29, 2008 | HP xw8200 PC Desktop

1 Answer

Equium M40X freezes

Hi, it seems your experiencing a overheat issue. At least one fan inside your PC has stopped working. The PC monitors internal heat, when the PC reaches a certain temperature it will shut down & or freeze. Chances are it's the CPU fan.
Link for your model no#

Good luck!


Mar 29, 2008 | PC Desktops

2 Answers

The Dreaded Blinking red light

what actually happens when you try to reboot?

Dec 07, 2007 | PC Desktops

Not finding what you are looking for?
HP Compaq dc5100 PC Desktop Logo

580 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP PC Desktops Experts

Fred Sops

Level 2 Expert

271 Answers

john smith

Level 2 Expert

366 Answers

 Mike M
Mike M

Level 3 Expert

3320 Answers

Are you a HP PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides