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I try to start a HP iq775. When I press the power button I heard one short beep and I see a red light red and then blue, and turn off inmediately. The PC won't start. The power supply works fine. Help

The power supply was checked separately and works fine.

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All HP iq77x all-in-one PCs suffer from the same problem of a faulty motherboard. This is primarily a soldering issue on the graphics chip,which develops cracks in the solder balls. The PCs contained a separate graphics card, which goes faulty first. This can be removed and the display connector can be moved on the motherboard to use the on-board graphics. This will eventually show the same issue. A short term fix was to heat the graphics chip with a hot air gun or other means (plenty of suggestions can be found on-line) which sometimes works for a few weeks at most. The only 'permanent' fix is to have the chip professionally removed and re-soldered; an expensive option.
If you are lucky, your PC is still wired to use the add-on graphics card, in which case you might be able to remove this and rewire for the motherboard graphics.

Posted on Mar 21, 2019

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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  • 239 Answers

SOURCE: PC won't Boot Up

Here is what is says in the owners manual in what to do in this case, Hope this is a Help, Happy Holidays
Red Power LED
flashes five times,
once every second,
followed by a two
second pause.
5 Pre-video memory
error.
1. Reseat DIMMs. Power on the
system.
2. Replace DIMMs one at a time to
isolate the faulty module.
3. Replace third-party memory with
HP memory.
4. Replace the system board.
Red Power LED
flashes six times,
once every second,
followed by a two
second pause.
6 Pre-video graphics
error.
For systems with a graphics card:
1. Reseat the graphics card. Power on
If you need anymore let me know and I will post them for you.

Posted on Dec 15, 2007

  • 101 Answers

SOURCE: atx12v1 cable

The repeating single beep with a small pause (actually 3 Beeps a Pause) clearly indicates problems with RAM .Replace it ,your problem will be solved . As for connecting the 12 volt 4 pin connector all mobos are designed to sense the presence of this 12 volts and ONLY THEN TURN ON.

Posted on May 06, 2008

leecom72
  • 4806 Answers

SOURCE: hp xw6200, 6 beeps, and red power button...failed start up.

6 long beeps indicates that there is a problem with the memory, take them out, clean the contacts and the DIMM slots and reseat them.
Hopefully this will resolve the problem, if not new memory may be required
kind regards

Posted on Dec 14, 2008

  • 12 Answers

SOURCE: HP dx5150 Microtower PC won't start up just beeps

That's what's called a POST beep code. The HP DX5150 beep code info can be found at http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=447468&prodTypeId=12454&objectID=c00868914,

but for your benefit: 5 beeps means you have a memory problem. Take out the DIMMS (memory sticks) and reseat them. Try to boot. If you get the POST code again, you have bad memory (unlikely, but could also be a bad FSB on the motherboard). If you have more than one memory stick, remove one, try to boot, if you get the error, put it to the other memory slot, try to boot...then do the same procedure with the other stick. If you can get it to boot on one stick, you know the other is bad.

Posted on Mar 14, 2009

efs_perpends
  • 1996 Answers

SOURCE: 1 short beep and 1 long beep when power button is pressed.

These sounds are known as BIOS beep codes. They indicate an error with your system. Traditionally, 1 long and 1 short indicates a system board problem.
If you google bios beep codes, you will be able to find the codes that relate to your Bios, or motherboard.
Backup your files. Your computer is trying to tell you something.

Posted on Apr 10, 2009

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