Question about Acer Aspire T690 (AST690UP820A) PC Desktop

1 Answer

Computer Not Reboot

Can get the power light, hard drive working light to come on, but continuous high pitch audio sound from the tower....no monitor picture....will not start nor acknowledge recovery dvd in drive. Have to shut down by holding down power button. Will not respond to Ctrl/Alt/Delete

While computer operating fine, young son hit Ctrl and Esc I believe simultaneously and went into the described mode.

Posted by on

  • 2 more comments 
  • horusmd Sep 18, 2008

    Computer sends no signal to monitor- makes high pitch beep from tower- must be shut down from power button will not reboot

  • cavdragon Nov 14, 2008

    When I push the power button the computer turns on for a split second, stops, and restarts a few seconds later and makes a high pitched beeping noise. Actually a long, non-stop, tear-my-ears-off beep.

  • hill_sheila_ Nov 30, 2008

    When I hit the power button on the tower all it does it send off this high pitched beep, it will not load a recorvery disk or do anything else but just beep.

  • Anonymous Feb 10, 2009

    Will not boot with both ram sticks installed. Works fine with just one but very slow.

    I can use either ram by itself and use either slot by itself.

    Just won't boot with both ram sticks installed.

    no errer message or nothing, just won't boot

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 4 Answers

Not sure if this is the final problem, but I removed one of the stick of RAM and tried powering up and it started! After waiting forever for my system to boot up, I shut down and re-installed the memory and it's running fine. If it does it again, I may just replace the RAM altogether.

Posted on Nov 14, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Just hooked up my pc yesterday worked fine. I shut down by going to start & turn off computor. Came back later to start back up. Monitor tells me in power safe mode. Tower doesn't seem to be starting...


Hi,

You can try removing external devices like (ex. usb printer, external Hard drive) and try to start the computer again. And see if there are lights on the tower

Hope this helps

Jan 03, 2010 | Dell E173FP 17" LCD Monitor

2 Answers

Hi grade laptop makes high pitched noise and the screen is blank


High pitch noise usually means the inverter board that drives the lamp behind the LCD display. If the rest of the laptop appears to work, for example, hard drive light blinking while booting, try hooking up an external monitor and hit whatever function key that switches you to the external monitor. If everything works, you may want to replace the inverter board yourself. It is not horribly hard if you are very careful. But it is not exactly a walk in the park kind of work.

If the rest of the laptop does not appear to work, the DC-DC step down power circuit is probably shot, which will also make a high pitch noise. In this case, you will have to replace the motherboard. Replacing a motherboard is a major pain in the behind. In most case, it is not worth the trouble if you have an older model.

Sep 02, 2009 | Dell Inspiron 6000 Notebook

2 Answers

Dell tower desktop Dimension 5100. Tower makes whistling sound.


sounds like it could be a bearing in your hard drive. is this problem constant? If so, I would open up the tower and disconnect the hard drive and then power up the tower again. if the sound goes away--you need to get a new hard drive. If not, you could have some dust bunnies in your cooling fan.

Jun 15, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Won't load windows...


you video card is not working.... if you have onboard video use that until you have installed the driver for your add on video card

Apr 16, 2009 | Dell Dimension 3000 PC Desktop

2 Answers

I have an Intel PC that has suddenly picked up lots of static


Forget the magnet. Noises like the ones you describe are usually because of a few things: 1) the hard drive is going bad, 2) a fan going bad, or 3) the CD drive is making noise. I'd like to know what the error message reads. And yes, you are correct that restarting the computer with the power button will sooner or later harm your computer.

Feb 19, 2009 | Computers & Internet

1 Answer

E153fp high pitched sound when on


Sounds like the LCD or the inverter are failing. Generally cheaper to replace than to fix

Jan 21, 2009 | Dell E153FP 15" LCD Monitor

1 Answer

My Moniter won't work!


That high pitched sound in one way is a very good thing. It pretty much points out the source of the problem itself. That is more than likely either a blown capacitor or transformer on the power source inside the monitor. I would rule out the power inverter for the LCD backlight because the power light will not turn on either. I have found that Samsung is very good with their repairs, and if it is a somewhat recent model they should be able to get it drop ship repaired with little expense. That can be an inconvenience, and if you do decide to replace the monitor altogether, please be eco-conscious and have the old screen either donated to a goodwill organization where scavengers like me will buy it for raw parts, or to an electronics recycling center. E-Waste is becoming a very large problem and LCDs and flat screens are a hefty piece of it.

Jul 08, 2008 | Samsung 226BW Monitor

1 Answer

Sound from monitor speakers distorted and high-pitched


Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

Jan 16, 2008 | Computers & Internet

1 Answer

Black screen not booting


check both your power and video connections to the monitor, sounds more like a monitor power issue.
if the connections appear ok, but screen still blank, try connecting a known good working monitor from somewhere else and see if it works with your pc, if it does, your original monitor is faulty, if it doesn't, you have a pc video issue.

Jan 14, 2008 | HP Pavilion a305w (DM181AR) PC Desktop

1 Answer

ACER AL1716 acting up BAD!


Be more specific. I guess your monitor has inbuilt speakers which are making noise. If yes do come back for a solution.

Sep 30, 2007 | Acer AL1716 17" LCD Monitor

Not finding what you are looking for?
Acer Aspire  T690 (AST690UP820A) PC Desktop Logo

104 people viewed this question

Ask a Question

Usually answered in minutes!

Top Acer Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18381 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Mohammed Ebrahim M
Mohammed Ebrahim M

Level 3 Expert

556 Answers

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

Answer questions

Manuals & User Guides

Loading...