Question about Computers & Internet

3 Answers

I'm stumped on this one. At semi-random intervals my video cuts out. The monitor flashes "no signal" then goes to sleep. This happens with both the video card and the on-board video. The computer is also locked up at these times, evidenced by the inability to toggle the numlock key or eject optical disc tray. The hard drive shows constant activity while this is happening. I have updated the bios, updated drivers (chipset, audio, video, lan) and pulled in every windows update. The issue happens semi-randomly. I say semi because certain things will drastically increase the odds of failure... connecting devices to front usb ports or getting online will almost guarantee failure within 5 minutes. However the failure can happen even if nothing is connected to the front usb nor is a browser open. Sometimes it will happen as soon as the user profile loads. The issue does not happen in safe mode. I've disabled every non-essential program and service in startup to no avail. The Event Viewer gives the following information: "The Computer Browser service depends on the Server service which failed to start because of the following error: The dependency service or group failed to start." Details tab reveals [ Name] Service Control Manager [ Guid] {555908D1-A6D7-4695-8E1E-26931D2012F4} [ EventSourceName] Service Control Manager EventID 7001 [ Qualifiers] 49152 Help please.

Posted by on


3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Computers & ... Master
  • 5,660 Answers

Hardware problems that emulate software problems.

I just had this problem on a 5 year old Gateway 7200X.
Logic would have dictated to first replace the monitor cable, then graphics card.

Experience and information detailed replacing the Power Supply.

1) ALL the LED lights combined use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) Peripheral devices vary, but 10 to 20 Watts each is the general norm.

4) A Processor can use 51 to 125 Watts. Depends on what Processor it is.
(Older processors such as a Pentium II, or III, or older AMD's use less)

Bad Power Supply.
Weak voltage power rail.

{ There are three main power rails.
1) The 3.3 Volt power rail
2) The 5 Volt power rail
3) The 12 Volt power rail}

The Power Supply's used in personal desktop computer's are SMPS.
Switched-Mode Power Supply.

There are Electrolytic Capacitors used.
Used in the Input Stage, and the Output Stage of an SMPS,

Left-click on the photo to the upper right.
In this view of a typical SMPS, (Not all are built of the same design), B in the photo designates the Input Stage electrolytic capacitors.
E denotes the Output Stage electrolytic capacitors.

Typical construction of an Electrolytic Capacitor.
(On the motherboard, and in the power supply, they are Radial Aluminum Electrolytic Capacitors)

Essentially there are three strips rolled together tightly, and inserted into an aluminum 'can'.
(Reference is to a Radial Aluminum electrolytic capacitor)

1) One strip is composed of metal, and is the Conducting strip.
(Positive connection)

2) One strip is also composed of metal, but has a Non-Conducting medium applied to it.
(Negative connection)

3) The last strip is usually composed of a paper-like substance, and is soaked with Electrolytic Paste.

The paper-like strip is laid in-between the two metal strips, and all three are rolled up tightly.

The top of the 'can' case has a vent.
A thin flat disk shaped, circular piece of metal.
The center of this disk has a design etched part way into it.
Generally an X or K.

The bottom of the 'can' case has a synthetic rubber plug. Disk shaped, and flat. It's the Bung.

There are two leads that come out through the Bung. One lead is Positive, and connects to the Conducting strip.
The other lead is Negative, and connects to the Negative strip.

When an Electrolytic Capacitor breaks down, the paste inside forms a gas.
Hydrogen Gas.

The gas creates pressure inside the case, and eventually compromises the seal at the bottom, (Bung), and the vent at the top.
(Breaks the X, or K etched shape open)

Electrolytic Paste is slowly pushed our.
(Oozes out)
So much paste loss, and the capacitor will operate in a weakened state.
Too much paste loss, and the capacitor fails.

A failing capacitor, (Or more than one), will cause a weak voltage power rail, but can cause the power to be intermittent.

Capacitor operates okay for a time period, then starts breaking down, and fails.
Too much of a load will cause the capacitor to break down also.

A failing capacitor can build it's charge back up. It's operating with a paste loss.
Eventually it will completely fail, and your computer won't boot at all.

Sorry for the long 'dissertation'.
Replace the Power Supply with a KNOWN to be good, and compatible one, for a test.

You may have access to one. Perhaps someone has upgraded to a better computer, and has the 'old' one around.
Maybe you can borrow the Power Supply for a test unit.

Posted on Oct 15, 2010

  • joecoolvette
    joecoolvette Oct 15, 2010

    "Electrolytic Paste is slowly pushed our.",

    Should be, "Electrolytic Paste is slowly pushed OUT."


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 2,185 Answers

The no signal message from the monitor means that it loses connection from the computer. Check your VGA cable if it is plugged in properly. You might want to unplug and replug it or twist some part of the cord as if you are trying to align a loose connection inside the wire.

Please let me know how this goes . Thank you for using FixYa.

Posted on Oct 15, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 707 Answers

Try re-seating RAM modules

Posted on Oct 15, 2010

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer


you can't run 2 different inputs at the same time. VGA takes prescedence.

Apr 06, 2014 | HP L1950 Monitor

3 Answers

Monitor randomly goes black

saet monitor to never sleep

Feb 03, 2013 | Computers & Internet

1 Answer

I am using an ACER ASPIRE AX1300 desktop PC with an LG FLATRON M2262D TV as a monitor. What happens is that at very random intervals the screen goes off, the screens blue power light flashes and after 5 to...

Assuming you are using a VGA connection, you might try reducing the "refresh rate" of the port to its lowers setting (60Hz). Usually the screen-off will happen if the signal is too weak or "noisy." Aslso try a different or shorter VGA cable.

Mar 21, 2011 | Computers & Internet

1 Answer

The monitor starts up displaying no signal

This means that the monitor is not receiving a video signal from the computer. When it doesn't receive a signal, it goes to sleep. You should check to make sure that the video cable is tightly connected, and also, if you have another monitor around, connect the other monitor to the computer and see if it works. It's possible that your monitor has malfunctioned.

Mar 03, 2010 | Hanns.G Corporation HW191D 19" LCD Monitor

1 Answer

With VGA input the screen randomly flashes on and off

power control chip of the VGA input screen is not controling the input settings

Jun 29, 2009 | Dell UltraSharp 1800FP 18.1" LCD Flat...

1 Answer

Samsung 204B random blank screen

I too have a dual monitor Samsung SyncMaster 204 setup. My monitors started flickering, then a week later had turn on problems like your describe. I found a fix on this fixya website and followed the fairly techie suggestion. It worked. I wrote up a .pdf set of instructions so others might also benefit. Hope this helps. Doug

Feb 07, 2009 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

Monitor goes to sleep no input signal only 1 mo old

Normaly the monitor is not picking up the signal from the PC, it could be VGA cord is not connected, faulty, or the video card is faulty,or the monitor is not compatible to the PC. It could be one of my suggestions. Trouble shoot by connecting your monitor to another working PC and see what happens.If not the VGA cord is faulty and not picking up signal from the PC. Hope it helps.

Jan 21, 2009 | Computers & Internet

2 Answers

My hp w2207h goes to sleep

Turn off the "powersaver" feature on your monitor by pressing <menu> then <management>then <powersaver> select off.

Nov 20, 2008 | HP f2105 21" LCD Monitor

1 Answer

Laptop monitor goes black

If you're working on the computer when that happens, it's not probably a power setting. Try to update your BIOS to the most current version at the toshiba support website ( & see what happens. Fixes the issue most of the time

I hope this helps.

Aug 25, 2008 | Toshiba Satellite A100-S8111TD Notebook

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

118 people viewed this question

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides