Solved How many USB dongles should I have for wifi connection PC ?

Dell / Optiplex 780
December 20, 2018 at 07:36:27
Specs: iPad , 8GB
How many Comfast USB wifi dongles are used on a PC? I thought I had two and when I turn my PC on I only get a dial up sound. I only have one now. I do not use dial up, I use my phone to access the internet on my PC. So I am wondering if I need to get another USB dongle to take care of this issue

message edited by Amanda78


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✔ Best Answer
December 26, 2018 at 05:30:59
This links to a PDF file which I believe is the user manual for your computer:

https://downloads.dell.com/manuals/...

It says that numbers 3 and 4 lit up indicate a memory failure.

A simple possibility is that one or more memory sticks have been dislodged and
are no longer making good contact with the connector(s). If just pushing them into
place doesn't help, you can try removing them, carefully cleaning the contacts with
a rubber or vinyl pencil eraser, and replacing them. Pulling them out and pushing
them back in a few times may help to clean the contacts on the computer board.

If you have a printed copy of the manual, it may be helpful to read it. Especially if
fixing one problem reveals the existence of a second problem.

The manual lists 31 different beep codes. I gather that in all cases but one, three
groups of beeps are sounded, with each group consisting of 1, 2, 3, or 4 beeps,
each the same length. A video memory test failure has only two groups of beeps.
The manual says:

Beep Codes
If the monitor cannot display error messages during the POST, the computer
may emit a series of beeps that identifies the problem or that can help you
identify a faulty component or assembly. The following table lists the beep
codes that may be generated during the POST. Most beep codes indicate a
fatal error that prevents the computer from completing the boot routine until
the indicated condition is corrected.

Code Cause
1-1-2 Microprocessor register failure
1-1-3 NVRAM read/write failure
1-1-4 ROM BIOS checksum failure
1-2-1 Programmable interval timer failure
1-2-2 DMA initialization failure
1-2-3 DMA page register read/write failure
1-3 Video Memory Test failure
1-3-1 through 2-4-4 Memory not being properly identified or used
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register failure
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 NVRAM power loss
3-3-2 Invalid NVRAM configuration
3-3-4 Video Memory Test failure
3-4-1 Screen initialization failure
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
4-2-1 No timer tick
4-2-2 Shutdown failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-1 Memory failure above address 0FFFFh
4-3-3 Timer-chip counter 2 failure
4-3-4 Time-of-day clock stopped
4-4-1 Serial or parallel port test failure
4-4-2 Failure to decompress code to shadowed memory
4-4-3 Math-coprocessor test failure
4-4-4 Cache test failure

If one of these codes matches what you hear, let us know.

Or if none of them match.

-- Jeff, in Minneapolis



#1
December 20, 2018 at 14:16:41
It would help to know more about your computer. You listed "iPad" in your specs & "Dell / Optiplex 780" in your tags. If it's the Optiplex 780, it's probably about 10 years old & we have no idea how you have it configured. But to answer your question, you only need one USB Wifi adapter.

https://www.dell.com/downloads/glob...


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#2
December 20, 2018 at 16:24:05
Who is your internet provider? Reading from your message I understand it is a xDSL connection (internet over telephone (wires).
Can you enlighten us how the setup is connected? Telephone wire - modem and/or (wireless??) router - telephone set?

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#3
December 20, 2018 at 22:28:15
The other thread you started, "No Wifi connection just a dial up sound",
suggests that your cell phone was damaged when the charger cord was
accidentally yanked out. Is that correct?

You were using your cell phone as your Internet access point, and the
damage caused it to no longer work as an access point, correct?

I've never heard of accessing a dial-up connection via a cell phone, but
hey, anything is possible. With the normal connection unavailable, your
phone must be using the backup dial-up connection. You have a pretty
smart smartphone, even if it is brain-damaged!

You can test that easily enough. First, does the dial-up connection work?
If so, I'm impressed. Whether it worked or not, turn off the phone and try
again. Do you still hear the sounds? If not, you know it was your cell
phone connecting or trying to connect, and you know that the phone's
WiFi is still working.

-- Jeff, in Minneapolis



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Related Solutions

#4
December 20, 2018 at 23:03:57
It occurs to me that I may have misunderstood what you meant by
the word "outlet" in the other thread. I assumed you meant the wall
outlet, providing power to charge your cell phone's battery. But now
I'm guessing that you meant something else. What connector or
device was ripped out of what "outlet"?

-- Jeff, in Minneapolis


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#5
December 21, 2018 at 09:47:12
The PC was ripped out of the outlet. Not my phone....My PC turns on and the fan is going but it wants to dial up and I do not use dial up. I use my hot spot from my phone which connects to my my PC to access the internet

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#6
December 21, 2018 at 09:50:29
You are correct about the outlet.lol. My tower was plugged in and I was using it along with my monitor. My monitor screen keeps saying check video cord and I cannot use the settings on my monitor screen either.

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#7
December 21, 2018 at 09:51:52
I was doing some reading last night and I was wondering if it could be my video card that got damaged

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#8
December 21, 2018 at 14:39:00
The reason we're unable to help is because your explanation about the problem is unclear. Let's see if we can sort things out....

To access the internet with your Optiplex, you use a USB wireless adapter that connects thru your cellphone's hotspot. "Something" happened to cause the computer's power cord to be pulled out of the wall outlet & that caused the system to shut down. Now when you attempt to power it back up, you hear a "dial-up sound" which would sound like this: https://youtu.be/gsNaR6FRuO0?t=7

My guess is that you're not hearing a dial up sound at all. What you're hearing is a BIOS beep code which is the result of that "something" that happened. Here's an example of a beep code (notice what's displayed on the monitor): https://www.youtube.com/watch?v=EIM...

If you can clearly explain what that "something" is that happened, maybe we can help you to fix the problem.


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#9
December 23, 2018 at 22:45:07
That's a beep code??? Doesn't sound much like a beep code to me.

But I agree that what Amanda heard might be a beep code.

Interesting, though, if it really is the dial-up sounds.

If it is, it would mean her computer is connected to a phone line.
But is it connected via WiFi to her cell phone, via phone cord to
her landline, via Ethernet cable to her DSL router, or what?

-- Jeff, in Minneapolis


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#10
December 24, 2018 at 05:05:18
Beep error codes only happen during POST and are typically a mix of long and short beeps. Depending on BIOS, you can check the error code to see if it's video (in this case, a distinct possibly) RAM, CPU or whatever.

Dialup sounds would require a dialup modem as compared to a network interface. If you're ever heard dialup sounds, you'd never mistake them for beep codes or really anything else.

Here's an example of dialup sounds:

https://www.youtube.com/watch?v=gsN...


The OP should reboot and if duing POST she hears beeps, she should record the number and duration (ie: 2 short, 2 long etc etc) and report back.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#11
December 25, 2018 at 00:57:34
Curt,

riider already linked to the exact same YouTube audio file of
the dialup sounds, What we lack is a good example of beep
code sounds.

-- Jeff, in Minneapolis


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#12
December 25, 2018 at 05:19:21
Jeff

I had a quick look for those.........didn't see any. But if one closes one's eye's and pretends they can here this;

Beep - Beep - Beeeeep - Beeeeep

There's 2 short, 2 long..........lol


Lost the mobo on this unit a couple weeks back and was getting some interesting beep error codes on POST from it. The code I was getting wasn't listed in the BIOS error code list. So I just replaced the mobo, CPU, RAM and video card.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#13
December 25, 2018 at 10:26:12
I posted a link to a BIOS/motherboard beep code in response #8. It even has a shot of the monitor displaying "no signal". The continuous beeping usually means a RAM problem. I figured that came closest to the sound of a dial-up modem.

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#14
December 25, 2018 at 21:36:41
Ok...I am going to try to explain this better.
I was using my Desktop Optiplex 780 Dell Computer,when a certain person took a hold of the tower and yanked it off my desk along with the monitor. All this happened while it was turned on and connected to the internet.
I DO NOT USE DIAL UP
I have a cell phone through Verizon. I use my mobile hotspot generated from my phone to connect with my desktop. That in turn connects me to the internet. I do not have any cords that I plug into my phone or PC in order to do this.
After all that had taken place I plugged everything back in to see if it still worked. The sound I hear sounds more like a dial up sound then anything. Which I find odd because I DO NOT USE DIAL UP or anything associated with a home wall phone.
My monitor screen reads Check Video Cable, and when I do press on the front buttons on my monitor it will show the screen saying....Auto Switch is ON. Default input is DVI.
But as far as me accessing the settings for my monitor I can’t.
I can hear the fan running and on my tower there are 4 numbers the numbers 3 and 4 stay lite up.

I hope that this is allot more helpful.


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#15
December 26, 2018 at 05:30:59
✔ Best Answer
This links to a PDF file which I believe is the user manual for your computer:

https://downloads.dell.com/manuals/...

It says that numbers 3 and 4 lit up indicate a memory failure.

A simple possibility is that one or more memory sticks have been dislodged and
are no longer making good contact with the connector(s). If just pushing them into
place doesn't help, you can try removing them, carefully cleaning the contacts with
a rubber or vinyl pencil eraser, and replacing them. Pulling them out and pushing
them back in a few times may help to clean the contacts on the computer board.

If you have a printed copy of the manual, it may be helpful to read it. Especially if
fixing one problem reveals the existence of a second problem.

The manual lists 31 different beep codes. I gather that in all cases but one, three
groups of beeps are sounded, with each group consisting of 1, 2, 3, or 4 beeps,
each the same length. A video memory test failure has only two groups of beeps.
The manual says:

Beep Codes
If the monitor cannot display error messages during the POST, the computer
may emit a series of beeps that identifies the problem or that can help you
identify a faulty component or assembly. The following table lists the beep
codes that may be generated during the POST. Most beep codes indicate a
fatal error that prevents the computer from completing the boot routine until
the indicated condition is corrected.

Code Cause
1-1-2 Microprocessor register failure
1-1-3 NVRAM read/write failure
1-1-4 ROM BIOS checksum failure
1-2-1 Programmable interval timer failure
1-2-2 DMA initialization failure
1-2-3 DMA page register read/write failure
1-3 Video Memory Test failure
1-3-1 through 2-4-4 Memory not being properly identified or used
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register failure
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 NVRAM power loss
3-3-2 Invalid NVRAM configuration
3-3-4 Video Memory Test failure
3-4-1 Screen initialization failure
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
4-2-1 No timer tick
4-2-2 Shutdown failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-1 Memory failure above address 0FFFFh
4-3-3 Timer-chip counter 2 failure
4-3-4 Time-of-day clock stopped
4-4-1 Serial or parallel port test failure
4-4-2 Failure to decompress code to shadowed memory
4-4-3 Math-coprocessor test failure
4-4-4 Cache test failure

If one of these codes matches what you hear, let us know.

Or if none of them match.

-- Jeff, in Minneapolis


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#16
December 26, 2018 at 17:17:03
Amanda, if you're using your Verizon cellphone as a hotspot, why are you asking about Comcast and USB wireless?

Did you listen/watch the Youtube videos to compare the sounds you're hearing? Are you getting the sounds when you first power up the system?

From what you've stated, it sounds like you're not getting any video input from the tower. If the system was yanked off the desk, was it dropped? If so, there could be any number of things that were damaged, as stated above, RAM that was dislodged, expansion cards loose, hard drive damage, etc.

How you connect to the Internet is not really relevant since you can't even get the system booted up.

Have you opened the case to see if everything is still intact?

Doing the best I can here... And remember, there's always more than one path to success. :)

message edited by Jennifer SUMN


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#17
December 26, 2018 at 18:08:01
I asked about a COMFAST USB wifi extender that goes in the back of my computer, which is inserted into a USB port. Because I thought that MAYBE that one came out of my computer during the yanking..lol and tossing around. And that it would be my solution to my problem which I am having.

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#18
December 26, 2018 at 18:12:24
Jeff,
Thank you for your help. I will look into things further this evening and keep you posted.

If there was a way I could send the sound to everyone to listen to I would.


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#19
December 26, 2018 at 23:11:38
I am very happy to say that my issue is resolved and I am back up and running..lol
I followed Jeffs directions on taking out the memory sticks and cleaned them with a eraser, then reinstalled them.

Thank you to everyone for all the help and suggestions.


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#20
December 26, 2018 at 23:30:02
If the sounds are actually error beep codes, they occur within
a few seconds of powering the computer on, should form a
short sequence which you can describe in terms of numbers
of beeps, and the sequence should repeat until the power is
turned off.

Ah! Problem solved! I spent too much time trying to decide
what to say, and this post became obsolete!

-- Jeff, in Minneapolis

message edited by Jeff Root


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