Any computer geeks.....

[Yoda]

There are certain beep codes for hardware issues, such as bad memory, video graphics, etc...

If it beeps once and has a blank or incorrect display, then something is up with the video display circuitry. Here is a list of stuff to do:

Remove new hardware

If any new hardware has been recently added to the computer, remove that hardware to make sure it is not the cause of your issue. If after removing the new hardware your computer works it's likely the computer is either not compatible with the new hardware or a system setting needs to be changed to work with the new hardware device.

Remove any disks or USB devices

Remove any disks, CD's, DVD's that are in the computer and if any USB devices (iPods, drives, phones, etc) are connected disconnect all of them as well. Reboot the computer and see if anything changes.

Disconnect external devices

Remove everything from the back of the computer except the power cable. Turn on the computer and see if it beeps normally. If the computer has never beeped keep the monitor or display connected to see if any change occurs.

Identify beep code

If you are receiving a sequence of beeps see the beep code page for a listing of different beep codes and their explanation or your motherboard or computer documentation. These beep codes are meant to help identify what computer component is failing or bad. If your beep code is not listed, continue troubleshooting.

Check all fans

Make sure all fans are running in the computer. If a fan has failed (especially the heat sink fan for the CPU) your computer could be overheating or detecting the fan failure causing the computer not to boot.

Check all cables

Verify that all the cables are properly connected at that there are no loose cables by firmly pressing in each cable.

All disk drives should have a data cable and power cable connected to them.
Your power supply should have at least one cable going to the motherboard. Many motherboards may also have additional cables connected to them to supply power to the fans.
Disconnect all expansion cards

If the above recommendations still have not resolved the irregular POST, disconnect the riser board (if applicable) and each of the expansion cards. If this resolves the issue or allows the computer to POST connect one card at a time until you determine what card is causing the issue.

Disconnect all drives

If you were unable to determine by the beep code what is failing or do not have a beep code disconnect the IDE, SATA, SCSI, or other data cables from the CD-ROM, hard drive, and floppy drive from the Motherboard.

If this resolves your irregular POST or generates error messages re-connect each device until you determine what device or cable is causing the issue. In some situations it can also be a loose cable connection that causes the issue.

Remove the RAM

If you continue to to receive the same problem with all the above hardware removed, disconnect the RAM from the Motherboard and turn on the computer. If the computer has a different beep code or if your computer was not beeping and is now beeping turn off your computer and try the below suggestions. Making sure to turn off the computer each time you're adding and removing the memory and then turning the computer back on to see if the suggestion resolves the issue.

Re-insert the memory into the same slot.
If you have more than one stick of memory remove all but one stick of memory, try rotating through each stick.
Try one stick of memory in each slot.
If you're able to get the computer to boot with one or more of the sticks of memory it's likely you're dealing with some bad memory. Try to identify what stick of memory is bad and replace it.

If you're able to get memory to work in one slot but not another slot. You're motherboard is defective you can either workaround the issue by running the memory in a different slot or replace the motherboard.

Power cycle the computer

In some situations a computer may have power related issues often caused by either the power supply or the motherboard. To help determine if this is the cause of your issue try turning the computer on, off, and back on as fast as possible, making sure the computer power light goes on and off each time. In some situations you may be able to temporarily get the computer to boot.

This should only be used as a temporary workaround if you're able to get this to work. Often this is good for users who may have not done a backup and need to get the computer up one more time to copy files before starting to replace hardware.

Disconnect and reconnect the CPU

For users who are more comfortable working with the inside of their computer or who have built their computer one last recommendation before assuming hardware is bad is to reseat the CPU by removing it and putting it back into the computer.

Bad motherboard, CPU, RAM, or power supply

If after doing all of the above recommendations you continue to have the same issue unfortunately it is likely that you have bad Motherboard, PSU, CPU, or RAM. The next step would be either to replace these components or have the computer serviced. If you plan on doing the repairs yourself or you are a repair shop it is suggested that you replace the Motherboard first, RAM, CPU, and then power supply in that order or try swappable parts from other computers.

http://www.computerhope.com/issues/ch000607.htm

[Monker]

Boot into safe mode, one of the first things to check would be Device Manager to monitor your hardware. If you see any yellow caution signs with an exclamation point, the issue could be narrowed down to that as well. If there isn't anything you see out of the ordinary, then reboot, tap F8 and boot into safe mode with networking, update your anti-virus and then run scans for any computer virus's on your hard disk that could be causing an issue. You could also boot into BIOS settings and check out what speed your fan is running at and the temperature of your CPU if it is in fact overheating.

When was the last time you have done a defrag? It seems to me that the way you have been restarting that you may have a fragged out hard drive.

[YoungJRNY]

Boot into safe mode, one of the first things to check would be Device Manager to monitor your hardware. If you see any yellow caution signs with an exclamation point, the issue could be narrowed down to that as well. If there isn't anything you see out of the ordinary, then reboot, tap F8 and boot into safe mode with networking, update your anti-virus and then run scans for any computer virus's on your hard disk that could be causing an issue. You could also boot into BIOS settings and check out what speed your fan is running at and the temperature of your CPU if it is in fact overheating.

When was the last time you have done a defrag? It seems to me that the way you have been restarting that you may have a fragged out hard drive.

Not sure that a fragmented hard drive would cause the system not to boot up. A defrag is mainly needed on a very slow system to sure up pieces of fragmented files that are scattered throughout the hard-disk that are needed to be placed together like a sock-drawer to speed and free up disk space (unless parts of the boot files like BOOT.INI are scattered and it can't pick up those files in a consistent manor.)

It's always good to defrag once a month anyhow to be on the safe side and to make sure the hard-disk is running clean. I run the software program "Smart Defrag 4." That's a good one. Also, for many virus's, a software called "COMBO-FIX" has mainly fixed every problem I've ever had and most tech's I talk to said the same thing.

It's always good to run a CHKDSK (check disk) in the command prompt to see if the hard-drive has any bad-sectors as well.