My computer does not start unless I restart it multiple times
Computer not passing POST
If your computer is not beeping or beeping irregularly when it is not starting see the POST troubleshooting steps.
Bad power supply or inadequate power supply
A bad, failing, or inadequate power supply is often the cause of this issue. If the hard drive is not getting enough power during the first time the computer starts, it will be unable to spin the hard drive platters fast enough to start the computer. However, if you restart the computer two, three, or more times, because the platters are already spinning, it is able to get the drive up to speed and able to boot off the drive.
If you're encountering this issue after installing new hardware in the computer, it's also possible the power supply in the computer is not supplying adequate power to the computer. For most computers we recommend you have at the least a 300-watt power supply.
Our first recommendation is to replace or replace and upgrade the power supply in the computer.
Bad hard drive
This issue can also be caused by a failing or bad hard drive. Similar to the above issue, if there is a failure within the hard drive that is causing the disk platters to not spin up fast enough during the initial power up, you may also encounter this issue.
If after replacing the power supply you continue to experience the same issue, it's likely that the hard drive is at fault and we suggest the hard drive be replaced.
Other hardware issue
Although not as likely as the above two causes (bad power supply or hard drive), other hardware can potentially cause this issue to occur. Below are some other possibilities that may cause this issue.
Replace the IDE/EIDE interface cable connected from the motherboard to the hard drive. If the cable is defective it could cause various issues with your hard drive.
Finally, if the computer continues to exhibit the same issue after following all of the above steps, it's likely that the motherboard is defective and that it should be replaced.