Post Problems When I power up the computer, it immediately shuts down then powers back up followed by two short beeps and then one beep. I have no video signal at all. I tried installing another video card with the same result. HELP!!!

In your case, it is a memory problem. It's either one of your RAM has problem if you have 2 slot RAM. Please ensure that you have the right RAM for your board. You can also clean the contacts of your RAM by using eraser.
Below are the most common beep code that being adopted to most BIOS for reporting.

• short beep - Normal POST(system is OK)
• Steady short beeps - power supply problem
• long continuous beep - memory failure
• Steady long beeps - power supply problem
• 1 long, 2 short beeps - video card problem

Trying to help you, please clarify me if the beeps are short or long ones, or some (how many) shor followed by some (how many) long ones. Don't worry, leaving the computer at "beeping mode" won't hurt it. Sorry for the details but these kind of codes identify if it's a motherboard, or CPU, or memory error.

Waiting clarification, don't hesitate to post.

Thanks and regards
Please kindly rate this solution
Stelios
direct FixYa link: http://www.fixya.com/users/technical114

Try this suggestion. Turn off your laptop, remove the cables and battery on the pc. Press and hold the power button for 8 secs. Then reinsert the cables and battery on the laptop and then turn on the pc. If it still continues to beep with no interruption, it is a problem on the motherboard. I suggest to call Acer and have your computer repaired immediately unless if you know how to reseat the motherboard by tearing down the laptop..

I still did not find beep code that match your problem..

Anyways here are the common beep codes for your motherboard.. it might help you too.
1. No beep - no reaction, the mother board is dead, power supply problem, processor and or ram problem.
2. 1beep - board is working fine.
3. One long beep then it shuts down - cpu problem, your processor is not working or missing.
4. 1short beep - system boots normally
5. 2short beeps - CMOS setting error.
6. 1long 1short beep - dram error
7. 1long 2 short beep - video card or monitor not connected
8. 1long 3 short beep - keyboard error.
9. 1long 9short beep - ROM error
10. Long beep - memory card is missing or not connected
11. Short beep - power supply error
12 Four beeps - there is no fan detected on Fan1 or Fan2 header. make sure to attach or reset CMOS bios to factory setting.


Hope this gave you an idea of your problem..

Much appreciated if you rate this help..thanks..

replace the ram

On startup beep how many beep do you hear?


1 short beep
Normal POST - system is ok 2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem 1 long, 1 short beep System board problem 1 long, 2 short beeps Display adapter problem (MDA, CGA) 1 long, 3 short beeps Enhanced Graphics Adapter (EGA) 3 long beeps 3270 keyboard card

Hope it Help you out ^_^

I went to google and it seems like the beeps can be problems for different problems in the hardware, this is what one message says,  there are lots of computer beeping answers out there: 1 short beep is your BIOS saying "HELLO I'M OK" 

Standard Original IBM POST Error Codes 

1 short beep Normal POST - system is ok 
2 short beeps POST Error - error code shown on screen 
No beep Power supply or system board problem 
Continuous beep Power supply, system board, or keyboard problem 
Repeating short beeps Power supply or system board problem 
1 long, 1 short beep System board problem 
1 long, 2 short beeps Display adapter problem (MDA, CGA) 
1 long, 3 short beeps Enhanced Graphics Adapter (EGA) 
3 long beeps keyboard card 

Each BIOS company has modified these codes over the years.

1 short beep
Normal POST - system is ok 2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem 1 long, 1 short beep System board problem 1 long, 2 short beeps Display adapter problem (MDA, CGA) 1 long, 3 short beeps Enhanced Graphics Adapter (EGA) 3 long beeps 3270 keyboard card

Standard Original IBM POST Error Codes
Code Description
1 short beep System is OK
2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem
1 long, 1 short beep System board problem
1 long, 2 short beeps Display adapter problem (MDA, CGA)
1 long, 3 short beeps Display adapter problem (EGA)
3 long beeps 3270 keyboard card

For more info go here: http://pulonangka.web.id/software/beep-codes-error-codes