Hi,
One can't actually tell until you try it again with another power supply if you have done more damage to the computer. However, I suspect that your power supply is not up to the job.
Look on the side of it and list the brand name and the amps per rail (would look like +12v=14 or something similar) and that will tell us a lot. Also, a 300 watt power supply of any kind generally won't pull a modern computer and if you have one of the "off brands," then that is even worse (which I suspect you do) on your computer.
Provide the information back and when you have a bit of time, read the power supply information under my signature. Use the calculator at the end of the document and add 30%, and it will tell you the bare minimum you must have as a power supply for your unit.
One can't actually tell until you try it again with another power supply if you have done more damage to the computer. However, I suspect that your power supply is not up to the job.
Look on the side of it and list the brand name and the amps per rail (would look like +12v=14 or something similar) and that will tell us a lot. Also, a 300 watt power supply of any kind generally won't pull a modern computer and if you have one of the "off brands," then that is even worse (which I suspect you do) on your computer.
Provide the information back and when you have a bit of time, read the power supply information under my signature. Use the calculator at the end of the document and add 30%, and it will tell you the bare minimum you must have as a power supply for your unit.