The dielectrics in electrolytic capacitors break down over time which eventually will lead to the failure of an electrolytic capacitor. This type of problem usually would not involve a beep code. Usually if there are bad caps the computer simply will not boot.
Since it appears that the failure is occurring during the POST (Power On Self Test) it would be a peripheral device which is causing this.
Checking the RAM is a good idea. If there is more than one module try removing all but one. If the module proves to be good try it in the other slots to determine if there is a problem with any of them.
After that try each of the other modules to make sure you aren't having any problems with them.
If you want to run a diagnostic on the RAM you could run Memtest86
1) Please download the Memtest86
Pre-Compiled Bootable ISO file.
2) Unzip the downloaded memtest86
file. You will need a program like 7-Zip
to unzip this file.
3) Inside, you will find the memtest86 file.
4) How to burn ISO image using Windows Burn Disk Image.
Notice: This applies only to Windows 7 and Windows 8, earlier versions do not have this.
1. Place a blank CD or DVD in the tray of your optical drive and close the tray.
2. After you have downloaded the ISO image you want to burn right click on the Start orb, then choose Windows Explorer.
3. When Explorer opens click on Downloads in the left pane. Scroll down till you find the ISO file you want and double click on it. Click on Burn Disk Image.
4. In the image below you will see Disk burner:, this should be set to the optical drive you want to use. Click on Verify disc after burning if you want to Windows to verity the disc image after burn. Click on burn.
5. In the image below you can see that the green progress bar, when the image is finished burning the bar will be filled.
6. After the image has completed being burned click on Close.
7) Locate the memtest86 file, and click on the Open button.
8) Click on the blue arrow to start burning bootable memtest86 CD.
9) Once the CD is created, boot from it, and memtest will automatically start to run.
Please note: It may be neccessary to change the boot order in the BIOS so the CD/DVD-ROM is the first device in the boot order and the hdd second.
Each pass consists of 8 tests, it is suggested that you run at least 7 passes, this will take several hours, you may find it simpler to let it run overnight. The longer you run the passes the more comprehensive the results will be.
If you are running multiple modules and have a failure, remove all but one module and test it separately, continue this with each module till you find the one that failed.
When you discern that a module is good, use it to test each slot to be sure there isn't a problem with one of them.
When the test is complete a display similar to the one below will appear. Note the locations of the Pass and Errors, any Error is indicative of a failed module.
Another possibility could be that your PSU is not producing the proper voltage on the different rails. You could take a voltmeter and check the rail voltages to be sure that they are within proper tolerances. If you need instructions for doing this let me know and I will post a tutorial.
There are five different DC rail voltages which are color coded. The Black wires are always negative.
It would also be a good idea to make sure there aren't any problems with the hdd.
When the website opens scroll down till you find the I Accept button and click on it.
If you scroll down below this button you will find instruction for installing this.
Once you install this program you will see an image similar to the one below.
1. SeaTools for Windows will search for hdds on your computer. Please remove any external storage devices connected via USB port.
2. Detected Drives will list the hdd/s found. Place a check mark in the drive you want to run the scan on.
3. You will see Basic Tests above Detected Drives, move the mouse pointer over this.
4. A menu will open with options for different scans, please click on Long Generic Test
5. This will start the scan. When the scan is complete you will see the result under Test Status , please post the results in your topic.
6. When the scan is complete you will see Test results, post the status. If it is green it has passed the scan.
7. Click on Help, then click on View Log File. If the scan failed take a screen shot of the Log File and post it in your topic.
Edited by dc3, 10 May 2015 - 01:02 PM.